A state courts spokeswoman said Sunday the trial is expected to resume Tuesday.
Hernandez is charged in the June 2013 killing of Odin Lloyd, who was dating his fiancee's sister. Lloyd's girlfriend testified Friday that Lloyd and Hernandez were cordial but not close, and had the beginnings of a friendship. She's expected to return to the stand when testimony continues.
Hernandez's lawyer has said the men were friends and Hernandez had no reason to kill Lloyd.
Jail officials say Hernandez is held in isolation and won't be watching the Patriots play Seattle in the Super Bowl Sunday night. He scored a touchdown in the Patriots' last Super Bowl appearance in 2012.