Jose David Diaz v. the State of Texas
CourtTexas Court of Appeals, 4th District (San Antonio)
Date FiledOctober 14, 2026
Docket04-25-00178-CR
StatusPublished
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Full Opinion
Fourth Court of Appeals
San Antonio, Texas
MEMORANDUM OPINION
Nos. 04-25-00177-CR & 04-25-00178-CR
Jose David DIAZ,
Appellant
v.
The STATE of Texas,
Appellee
From the 175th Judicial District Court, Bexar County, Texas
Trial Court Nos. 2024CR1766 & 2024CR1767
Honorable Jefferson Moore, 1 Judge Presiding
Opinion by: Adrian A. Spears II, Justice
Sitting: Lori I. Valenzuela, Justice
Adrian A. Spears II, Justice
Velia J. Meza, Justice
Delivered and Filed: October 14, 2026
AFFIRMED AS MODIFIED
Jose David Diaz was charged by separate indictments with committing aggravated assault
with a deadly weapon against Juan Delgado and Claudia Trevino. See TEX. PENAL CODE
§ 22.02(a)(2). Each indictment alleged that Diaz had previously been convicted of two felony
offenses, which, if found true, increased his punishment range to imprisonment for 25 to 99 years
The Honorable Catherine Torres-Stahl is the presiding judge of the 175th District Court. The Honorable Jefferson
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Moore, sitting by assignment, presided over Diaz’s trial and signed the judgments of conviction.
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or life. See id. § 12.42(d). After the jury found him guilty in each cause, he was sentenced by the
trial court as a habitual offender to serve concurrent 50-year terms of imprisonment. In four issues
on appeal, Diaz contends that the trial court erroneously: (1) failed to conduct an informal
competency hearing; (2) reviewed testimonial evidence at the sentencing hearing; (3) failed to
instruct the jury on self-defense against multiple assailants; and (4) failed to instruct the jury on
defense of third persons. We modify the judgments of the trial court to correct clerical errors
therein and affirm as modified.
FACTUAL BACKGROUND
On November 13, 2023, Juan Delgado attended a party at Claudia Trevino’s home. Diaz,
Trevino’s next-door neighbor, spent the evening in his yard antagonizing partygoers over street
parking. Trevino and her family had lived next to Diaz for nearly a decade, and Diaz had become
increasingly hostile.
Diaz was still standing in his yard around midnight as Delgado was leaving. The two men
argued from the neighboring properties, and occupants of both homes emerged to intervene. While
Trevino, her pregnant daughter, and Delgado’s girlfriend attempted to remove Delgado from the
area, Diaz brandished a shotgun. Witnesses recalled Diaz firing twice: one “warning shot” into the
air, and another at Delgado and those around him. The shotgun blast struck Delgado in the shoulder
and torso, and hit Trevino in the leg. Delgado collapsed, and Diaz fled into his home before police
arrived.
Responding officers with the San Antonio Police Department observed Delgado in critical
condition. He and Trevino were transported to the hospital while other officers persuaded Diaz to
exit his home and voluntarily surrender. During Diaz’s custodial interview, he initially denied
possessing or shooting a firearm, then claimed that he was defending himself.
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Diaz was ultimately convicted of aggravated assault with a deadly weapon as alleged in
both indictments. The evidence presented at the sentencing hearing established that Diaz’s criminal
conduct began in 1991, and he was convicted of aggravated assault with a deadly weapon in 2000
and 2015. The trial court found the enhancement allegations true and imposed concurrent 50-year
terms of imprisonment for each conviction. This appeal followed.
COMPETENCY
Diaz contends in his first issue that the trial court erroneously failed to conduct an informal
inquiry into his competency to stand trial.
As a matter of constitutional due process, a person who is incompetent may not stand trial.
Boyett v. State, 545 S.W.3d 556, 563 (Tex. Crim. App. 2018). “A person is incompetent to stand
trial if the person does not have: (1) sufficient present ability to consult with the person’s lawyer
with a reasonable degree of rational understanding; or (2) a rational as well as factual
understanding of the proceedings against the person.” TEX. CODE CRIM. PROC. art. 46B.003(a).
A trial court employs a two-step procedure for making competency determinations: (1) an
informal inquiry; and (2) a formal competency trial. Boyett, 545 S.W.3d at 563. The trial court
must conduct an informal inquiry “upon a ‘suggestion’ from any credible source that the defendant
may be incompetent.” Id.; see TEX. CODE CRIM. PROC. art. 46B.004(a), (c), (c-1). A suggestion of
incompetency may be based on the trial court’s observations related to the defendant’s capacity
to: (1) rationally understand the charges against him and the potential consequences of the pending
criminal proceedings; (2) disclose to counsel pertinent facts, events, and states of mind; (3) engage
in a reasoned choice of legal strategies and options; (4) understand the adversarial nature of
criminal proceedings; (5) exhibit appropriate courtroom behavior; and (6) testify. TEX. CODE
CRIM. PROC. art. 46B.024(1); see Montoya v. State, 291 S.W.3d 420, 424 (Tex. Crim. App. 2009),
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superseded by statute, TEX. CODE CRIM. PROC. art. 46B.004, as stated in Turner v. State, 422
S.W.3d 676, 692 & n.31 (Tex. Crim. App. 2013). Because the trial court is “in a better position to
determine whether [the defendant] was presently competent,” we review the decision not to
conduct an informal competency inquiry for an abuse of discretion. Babyak v. State, No. 04-21-
00216-CR, 2022 WL 2334549, at *2 (Tex. App.—San Antonio June 29, 2022, no pet.) (mem. op.,
not designated for publication) (citing Montoya, 291 S.W.3d at 426); Geer v. State, 722 S.W.3d
88, 96 (Tex. App.—Houston [14th Dist.] 2025, pet. ref’d).
The record shows that Diaz understood the proceedings against him and assisted his
attorney in preparing his defense. See TEX. CODE CRIM. PROC. art. 46B.003(b). During a pretrial
hearing on February 11, 2025, the trial court admonished Diaz as to the potential consequences of
pleading not guilty and exercising his right to a jury trial. Diaz confirmed that he understood the
punishment ranges, parole eligibility, and his election of punishment upon a guilty verdict.
Following the admonishments and discussion of pro se motions, Diaz attempted to speak directly
to the judge. He then apologized for doing so, thereby exhibiting his awareness of appropriate
courtroom behavior. See TEX. CODE CRIM. PROC. art. 46B.024(1)(E).
Diaz argues that his pro se motion for a competency hearing filed in April 2024 amounts
to a “suggestion” of incompetency that triggered the trial court’s duty to conduct an informal
inquiry. While Diaz was represented by counsel, he filed numerous handwritten pro se motions,
including a motion for a competency hearing. Trial counsel provided Diaz’s pro se motions to the
trial court clerk “for any future appellate record,” but neither urged nor adopted them. The trial
court informed Diaz and his trial counsel that the handwritten motions would not be considered:
“You have a lawyer. I do not look at pro se motions when there’s a lawyer. It will be put in the
file, but I’m not going to look at them or rule on them.”
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As the State correctly observes, a defendant has no right to hybrid representation. Bluntson
v. State, 728 S.W.3d 87, 135 (Tex. Crim. App. 2025). Therefore, a trial court is free to disregard
any pro se motions presented by a defendant who is represented by counsel. Id. A trial court’s
decision not to rule on a pro se motion is not subject to appellate review. Robinson v. State, 240
S.W.3d 919, 922 (Tex. Crim. App. 2007). Here, because Diaz was represented by counsel, and
counsel did not adopt or urge Diaz’s pro se motion to evaluate his competency, the trial court did
not abuse its discretion by refusing to consider Diaz’s pro se motion. See Bluntson, 728 S.W.3d at
135. It necessarily follows that, under the foregoing circumstances, a matter not considered by the
trial court cannot suggest incompetency.
Even so, Diaz’s handwritten pro se motions undermine his contention rather than support
it. In addition to his request for a competency evaluation, Diaz drafted a motion to suppress
evidence and a request for jury instructions, which demonstrates his understanding of the
proceedings and ability to assist counsel. See Montoya, 291 S.W.3d at 425-26; Moore v. State, 999
S.W.2d 385, 395-96 (Tex. Crim. App. 1999). Having found no suggestion elsewhere in the record
that Diaz was incompetent to stand trial, we conclude that the trial court acted within its discretion
by declining to sua sponte conduct an informal competency inquiry. See State v. Lerma, 639
S.W.3d 63, 68 (Tex. Crim. App. 2021). Accordingly, we overrule Diaz’s first issue.
PUNISHMENT EVIDENCE
In Diaz’s second issue, he asserts that the trial court violated his rights under the
Confrontation Clause by considering testimonial evidence in assessing punishment. During the
sentencing hearing, the State introduced nineteen exhibits chronicling Diaz’s criminal history
beginning in 1991. Then, without objection, the trial court agreed to review “the certified
stip[ulation]s of the two prior individual enhancement allegations”—i.e., the factual bases of
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Diaz’s 2000 and 2015 aggravated assault convictions. Diaz now contends that the trial court’s
review of those certified documents violated his Sixth Amendment right to confrontation and
cross-examination.
“In all criminal prosecutions, the accused shall enjoy the right . . . to be confronted with
the witnesses against him.” U.S. CONST. AMEND. VI. In other words, criminal defendants retain
the right to physically face witnesses and conduct cross-examination. See Woodall v. State, 336
S.W.3d 634, 641-42 (Tex. Crim. App. 2011) (quoting Mattox v. United States, 156 U.S. 237, 242-
43 (1895)). A defendant’s complaint that his rights under the Confrontation Clause were violated
must be preserved for appellate review. See Davis v. State, 313 S.W.3d 317, 347 (Tex. Crim. App.
2010); see also Reyna v. State, 168 S.W.3d 173, 179 (Tex. Crim. App. 2005) (holding that
defendant failed to preserve Confrontation Clause complaint for appellate review when defendant,
in his trial objection, “‘did not clearly articulate’ that the Confrontation Clause demanded
admission of the evidence”). The failure to object at trial waives a Confrontation Clause complaint
on appeal. See Paredes v. State, 129 S.W.3d 530, 535 (Tex. Crim. App. 2004) (holding that
defendant failed to preserve Confrontation Clause complaint for appellate review when trial
objection was solely on hearsay grounds).
When the State offered the challenged evidence in this case, Diaz’s attorney responded that
he had “no objection.” He therefore waived any claim on appeal that the trial court violated Diaz’s
rights under the Confrontation Clause by reviewing that evidence. See Holmes v. State, 248 S.W.3d
194, 200 (Tex. Crim. App. 2008). We overrule Diaz’s second issue.
JURY CHARGE
In Diaz’s third and fourth issues, he challenges the trial court’s failure to instruct the jury
on the law of multiple assailants and defense of a third person.
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The trial court must provide the jury with “a written charge distinctly setting forth the law
applicable to the case.” TEX. CODE CRIM. PROC. art. 36.14; see Bell v. State, 635 S.W.3d 641, 645
(Tex. Crim. App. 2021). However, “[a]n unrequested defensive issue is not the law applicable to
the case.” Taylor v. State, 332 S.W.3d 483, 487 (Tex. Crim. App. 2011); see also Vega v. State,
394 S.W.3d 514, 519 (Tex. Crim. App. 2013) (“A defendant cannot complain on appeal about the
trial judge’s failure to include a defensive instruction that he did not preserve by request or
objection: he has procedurally defaulted any such complaint.”). Trial courts are thus not required
to sua sponte instruct the jury on unrequested defensive issues. Oursbourn v. State, 259 S.W.3d
159, 179 (Tex. Crim. App. 2008) (citing Posey v. State, 966 S.W.2d 57, 62 (Tex. Crim. App.
1998)); Roby v. State, 647 S.W.3d 747, 750 (Tex. App.—San Antonio 2021, no pet.). While no
magic words are required, a defendant must convey a requested instruction with sufficient
specificity to bring it to the trial court’s attention. See Bennett v. State, 235 S.W.3d 241, 243 (Tex.
Crim. App. 2007) (“We do not require a trial judge to mull over all the evidence introduced at trial
in order to determine whether a defendant’s request for a jury instruction means more than it
says.”).
At trial, Diaz did not dispute that he fired his shotgun in the direction of Delgado and
Trevino. However, he argued that his conduct was justified to defend himself, and the jury was
instructed on the law of self-defense at the conclusion of the guilt phase. See TEX. PENAL CODE
§ 9.31(a). Although Diaz neither objected to the charge nor requested additional defensive
instructions, he contends on appeal that the absence thereof resulted in egregious harm.
Relevant here, section 9.31 of the Penal Code provides that a person is justified in using
force against another when and to the degree he reasonably believes the force is immediately
necessary to protect against the other’s use or attempted use of unlawful force. See TEX. PENAL
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CODE § 9.31(a). Equally permissible is a person’s use of force to protect a third person under
similar circumstances. See TEX. PENAL CODE § 9.33. The justified use of force is not limited to a
single aggressor—if “the evidence viewed from the defendant’s standpoint shows an attack or
threatened attack by more than one assailant,” a defendant is entitled to a multiple-assailants
instruction. Jordan v. State, 593 S.W.3d 340, 343 (Tex. Crim. App. 2020).
Because self-defense and defense of a third person are separate defenses in different
sections of the Penal Code, “[a] request with respect to the former does not by itself alert the trial
judge with respect to the latter.” Bennett, 235 S.W.3d at 243; see TEX. PENAL CODE §§ 9.31(a),
9.33. The same holds true for an instruction on self-defense against multiple assailants. See Jordan,
593 S.W.3d at 347 (holding appellant preserved error regarding the inclusion of a multiple-
assailants instruction in both the self-defense charge and the defense-of-a-third-person charge
because the record reflected that the trial court understood the defense’s “request to apply to both
self-defense and defense of a third person”). Here, Diaz neither objected to the charge nor
requested additional instructions, thereby forfeiting appellate review of his complaints in that
regard. See Posey, 966 S.W.2d at 62; Jackson v. State, 288 S.W.3d 60, 63 (Tex. App.—Houston
[1st Dist.] 2009, pet. ref’d) (“A defendant preserves error if the requested charge is specific enough
to put the trial court on notice of the omission or error in the charge, and the requested charge need
not be ‘in perfect form’ but only sufficient enough to bring the request to the trial court’s
attention.”) (quoting Chapman v. State, 921 S.W.2d 694, 695 (Tex. Crim. App. 1996)).
Accordingly, we overrule Diaz’s third and fourth issues.
CLERICAL ERRORS IN THE JUDGMENT
Though not reversible error, the judgments incorrectly list “N/A” for Diaz’s pleas of “not
true” to the enhancement paragraphs and the trial court’s findings of true. See TEX. R. APP. P.
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43.2(b); Bigley v. State, 865 S.W.2d 26, 27-28 (Tex. Crim. App. 1993) (concluding that the Texas
Rules of Appellate Procedure authorize courts of appeals to reform judgments when the
information necessary to do so is available). We therefore reform the judgments to accurately
reflect Diaz’s pleas and the trial court’s findings.
CONCLUSION
We modify the judgments of the trial court and affirm the judgments as modified.
Adrian A. Spears II, Justice
DO NOT PUBLISH
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