The competition for the Bills’ vacant free safety job kicks into second gear tonight when the team meets Detroit. On the other side of the field, ironically, will be the reason Buffalo is looking for a new free safety. Kurt Schulz, who started six seasons for the Bills, signed with the Lions as a free agent. Keion Carpenter is expected to get the starting nod tonight for Buffalo, followed by Daryl Porter and rookie Travares Tillman. Carpenter also spent time at corner and strong safety this week in practice, and Porter also can play cornerback. Coach Wade Phillips has made it clear he wants to keep the best defensive backs overall, regardless of position. "That’s the way coach Phillips handles things," Porter said. "If you’re playing well and doing your job, he’s going to play the best players. He’s always saying, `I brought you guys here, I want to see you guys perform on Sunday.’ That’s nice to hear."’