Kato Kaelin's cross-examination and redirect testimony consumed Day 44, with Shapiro aggressively portraying Simpson as calm, unangered, and a loving father—while establishing gaps in the timeline—and Clark dramatically eliciting accounts of the Gretna Green police call and Christmas 1993 argument that had been omitted in whole or in part from Kaelin's prior statements. Clark challenged Kaelin's credibility over those omissions; Kaelin said he was overwhelmed and had not deliberately withheld information. Multiple discovery disputes and sidebar conflicts underscored the increasingly contentious proceedings.

• Shapiro's cross-examination portrayed OJ as a loving, calm, non-jealous father in good spirits the week before the murders.
• Clark's redirect elicited accounts of the Gretna Green incident (broken French doors and police called) and the Christmas 1993 argument, then challenged Kaelin over omissions about those events from his prior statements.
• Dispute over defense investigator notes and Shapiro's introduction of a 20-page uncertified June 14th interview transcript that Clark claimed she had never seen.
• Shapiro questioned Kaelin about the timing between the thumping sounds and next seeing Simpson; Kaelin confirmed he did not observe an injury to Simpson's left finger at 11pm.
• Clark impeached Kaelin by establishing his pattern of omitting significant details from prior statements, suggesting deliberate withholding.
• Judge Ito instructed jury to disregard hearsay about a 1989 domestic violence incident, ending the day on a note of procedural conflict.