‘With the Buffalo Bills two days away from their opening preseason game, coach Wade Phillips isn’t sure how he’ll play his personnel. In fact, it won’t be until after the morning workout, the lone practice on Thursday, that Phillips will determine playing time for his team in Friday night’s exhibition against Cincinnati at Ralph Wilson Stadium. But it will be anything but meaningless to some players. “It’s important to a number of young guys,” said Phillips, without being specific. However, it’s easy to guess. Start with wide receiver. After former All-Pro Eric Moulds and last year’s second-round draft choice, Peerless Price, there’s not a single wideout on the Buffalo roster who has caught an NFL regular-season pass…Another battle to watch is at free safety where an inexperienced trio is competing for the spot vacated by Kurt Schulz, when he went to Detroit as a free agent. Daryl Porter, Keion Carpenter and this year’s second round draft choice, Tavares Tillman, have never started an NFL game…Then there’s running back. No matter what the Bills say, there’s some concern about Antowain Smith.’