Day 138 focused heavily on fingerprint evidence, with LAPD analyst Gilbert Aguilar testifying that none of 17 latent prints lifted from the Bundy crime scene matched O.J. Simpson, though the prosecution blunted this by highlighting the difficulty of developing fingerprints from leather gloves and other surfaces and establishing that many potential sources were never compared. The court also spent considerable time on logistical matters, including contested arguments over conducting a nighttime jury view of the crime scenes and scheduling witness availability as the Defense case winds down.

• LAPD fingerprint analyst Gilbert Aguilar testified that O.J. Simpson was excluded from all 9 identifiable prints recovered from Bundy crime scene on June 13, 1994.
• Prosecution established during cross-examination that developing identifiable fingerprints from leather gloves, cloth, and concrete can be difficult, undermining the defense's implication that absence of prints is exculpatory.
• Court heard arguments over a nighttime jury view at Bundy and Rockingham, with defense objecting to altered lighting and landscaping conditions.
• Judge Ito pressed both sides to complete the Defense case by August 28th due to jury restlessness.
• Jury excused for day-and-a-half recess due to out-of-state witness scheduling conflicts.