Kenyon Martin and Marcus Camby are listed as doubtful for tomorrow's showdown in Oklahoma City, the team said. Martin should miss his second straight game as he is dealing with right-knee soreness. Martin signed with the Knicks in late February and had been one of the keys to their current 11-game winning streak. He sat out in Milwaukee Friday and his absence appeared to effect the club during a lethargic first half in which they fell behind by 9 points.