Highlights from warmups
SANTA CLARA — Here’s what I observed during today’s warmups. Greg Roman and Jim Harbaugh’s father, Jack, having a serious conversation in the middle of the practice field. Patrick Willis gingerly high stepping hurdles. I would be extremely surprised if he plays this Monday night. Joe Staley jogging back and forth across the field with a backwards cap on his head. I doubt he plays this Monday night, either. Aldon…