This time the call didn't have to come from the rafters. When the sound of "Sheeeed" spread across the Wells Fargo Center, Rasheed Wallace had already checked into the game. A full 5:34 remained in the third quarter. This was not mop-up duty. Apparently, the Brian Scalabrine minutes are over. Wallace logged 13:33 in the Knicks' 110-88 dismissal of the Sixers last night, proof he's rapidly rounding into game shape enough to provide quality minutes off the bench earlier than expected. After two years away from basketball, there was really no timetable for when the 38-year-old could be counted on to play extended minutes. Anything he contributed early on was considered gratis. But the Knicks haven't gotten out of their first week of their season before Wallace is already making an impact. He scored 10 points, last night including an emphatic three-pointer at the buzzer to end the third quarter that gave the visitors an 89-68 lead that was never threatened. In what has become his signature celebration, Wallace pointed three fingers to his head as if pulling a trigger. "It's three points. Take that to the head," Wallace explained.