This was supposed to be a test run for Rasheed Wallace, a chance, according to Knicks coach Mike Woodson, “to get his feet wet a little bit.” The test lasted all of four minutes, as Wallace left last night’s 106-95 loss to the Bobcats with a sore left foot. He then left the arena without comment, but with a noticeable limp. “I’m not saying it’s a setback,” Woodson said. “He was a little sore. He asked me to come out and I pulled him. We’ll evaluate it a little more and see how he feels.” So in a game with all the value of Monopoly money, the Knicks utilized seven players — one of them Wallace, so yeah, they played six. Carmelo Anthony (shoulder), J.R. Smith (rest), Tyson Chandler (neck), Kenyon Martin (ankle) and Amar’e Stoudemire (knee) didn’t even travel. Raymond Felton and Marcus Camby dressed and didn’t play. Subtract all those bodies and even the Bobcats can look formidable as the 53-victory Knicks, with the No. 2 Eastern seed locked up, took it on the chin, but still finished with a 23-18 road record. The hope was that the Knicks were getting their big-man alignment back. Wallace entered with 3:08 left in the first quarter and then exited at 11:18 of the second, playing all of 3:50 before the team announced he was done for the night with a sore left foot. In his 21st game this season and his first game since Dec. 13 while battling a fractured foot, Wallace made one of three shots and scored two points. Woodson had said he wanted to “just test him and see where he is.” He was in the infirmary fairly soon. “I wasn’t disappointed. I thought the minutes he gave were positive,” said Jason Kidd, who played 21 minutes off the bench as all five starters went at least 41 minutes. “He’s probably going to have some soreness. I’m just happy that he’s not hurt. Hopefully he can build on the four minutes. “I’m not concerned at all. He’s coming off a surgery, so the big thing is he’s going to be sore. Hopefully he didn’t hurt himself.”