i'm paige hopkins. the defense in the trial of george zimmerman rested its case late yesterday. judge deborah nelson says she anticipates closing arguments starting today with deliberations beginning friday afternoon. nbc's sarah dallof is live for us outside the courthouse in sanford, florida. sarah, good morning. >> reporter: good morning, paige. a lot of big developments yesterday, but the main headline, george zimmerman will not testify. >> the defense would call robert zimmerman sr., your honor. >> after four days of testimony, attorneys for george zimmerman who pleaded not guilty to second-degree murder wrapped up their case with zimmerman's father. one last witness testifying the screams on the 911 call. >> i told them absolutely it's my son, george. >> i am asking your client questions. please, mr. west. >> reporter: it was a day sprinkled with heated exchanges between the defense and judge deborah nelson, specifically when the judge asked zimmerman if he would be taking the stand. >> i object to the court inquiring to mr. zimmerman about his decision whether to testify