I asked Chris Tillman about his back again this morning. "Real good," he said. And that's your Chris Tillman back update for the day - until he starts for the Orange Team in today's intrasquad game that begins at 1:05 p.m. Tillman will oppose Jake Arrieta, but not for long. They're both scheduled to pitch one inning. We'll also get a look at Alfredo Simon, who hasn't pitched since undergoing ligament-reconstructive surgery on his right elbow on May 5. His velocity has been outstanding in camp. Here's the list of intrasquad pitchers, in case you haven't memorized it: Orange Team Chris Tillman Mike Hinckley Wilfrido Perez Ross Wolf Chorye Spoone Josh Perrault Brandon Erbe Black Team Jake Arrieta Jim Johnson Luis Lebron Troy Patton Armando Gabino Frank Mata Alfredo Simon Manager Dave Trembley said he'll move some players around, and it wouldn't surprise me to find Luke Scott at first base. Michael Aubrey expects to resume full activities tomorrow. He's been limited since Thursday after undergoing a procedure that required stitches in his back. "I've been running, keeping my legs underneath me," he said. "I'll probably be in the same boat as a lot of these guys, getting our timing down as hitters."