Unreported / Non-Citable
Background
Delfonte Damon Diamond was tried in Harris County District Court on charges of aggravated sexual assault of a child under fourteen years of age and sexual assault of a child. A jury convicted him on both counts and assessed punishment at twenty-five years imprisonment for the first charge and twenty years for the second charge, to run concurrently. Diamond filed a motion for new trial claiming his trial counsel rendered ineffective assistance in three respects: failing to present character witnesses during the punishment phase, denying him the right to testify, and failing to address alleged third-party threats that prevented witnesses from appearing.
The trial court scheduled a hearing “by affidavits” on Diamond’s motion for new trial but conducted no oral hearing. The motion was overruled by operation of law. Diamond appealed, raising a single issue: whether the trial court abused its discretion in failing to conduct an oral hearing on his motion for new trial.
The Court’s Holding
The First Court of Appeals affirmed the trial court’s judgment. The court held that the trial court did not abuse its discretion in denying an oral hearing on the motion for new trial because Diamond failed to establish “reasonable grounds” showing he could potentially be entitled to relief under the applicable standard.
First, regarding the character witnesses claim, the court found Diamond had not met his burden under Strickland v. Washington. Although Diamond’s motion included more than thirty notes and letters attesting to his character, none of the authors indicated whether they were available or willing to testify, nor did they provide specific details about the substance of their testimony. The court emphasized that generic character letters are insufficient—affidavits from the witnesses themselves describing their availability, willingness, and the specific content of their testimony are required. Moreover, any additional testimony would likely have been cumulative to what his mother already testified about during the punishment phase.
Second, regarding Diamond’s claimed denial of the right to testify, the court found his ineffective assistance claim contradicted by the record. Before trial began, Diamond explicitly testified on the record that he did not want to testify, that his decision was freely and voluntarily made, and that he understood the pros and cons of that decision. Defense counsel had asked him repeatedly whether he wanted to testify. Diamond later contradicted this in his motion for new trial, claiming he “wanted to tell [his] story” and that he and counsel “never prepared [his] testimony.” The court held that Diamond’s unequivocal on-the-record statement that he did not want to testify defeated his post-trial assertion that counsel denied him his right to testify.
Third, regarding the alleged witness threats, the court found the issue was procedurally barred. Diamond knew about the threats before trial and had the opportunity to raise the issue then, but did not. A defendant may not raise a matter for the first time in a motion for new trial if he had the opportunity to raise it at trial. Because Diamond knew of the threats and failed to object during trial, he waived the issue for appeal.
Key Takeaways
- To establish ineffective assistance for failing to call witnesses, a defendant must produce affidavits from the prospective witnesses showing they were available and willing to testify, with specific details about what they would have testified to—generic character letters are insufficient.
- A defendant cannot successfully claim on appeal that trial counsel denied him the right to testify when he explicitly stated on the record before trial that he did not want to testify and that his decision was free and voluntary.
- Issues known to a defendant before trial must be raised during trial; raising them for the first time in a motion for new trial constitutes a waiver and procedural default.
- Trial courts are not required to hold oral hearings on motions for new trial when the defendant fails to present sufficient factual support establishing reasonable grounds for relief.
Why It Matters
This decision reinforces the high bar for establishing ineffective assistance of counsel under Strickland and clarifies the evidentiary requirements for supporting such claims in motions for new trial. Trial counsel faces a strong presumption of reasonableness, and defendants must overcome that presumption with concrete evidence—not speculation or conclusory allegations. The opinion emphasizes that generic character references do not suffice; the defense must present sworn testimony from prospective witnesses detailing their availability and proposed testimony.
The decision also serves as a cautionary reminder about procedural requirements: defendants cannot repair trial strategy failures by reframing their own trial decisions in post-trial motions, nor can they raise objections for the first time after trial when they had full notice and opportunity to raise them beforehand. These procedural and evidentiary requirements ensure that appeals focus on genuine trial errors rather than post-hoc rationalization or neglect.