Cardinals wide receiver Larry Fitzgerald could miss the remainder of the preseason after spraining his right knee. Fitzgerald watched practice on Monday in a leg brace. He called the injury "a minor setback" but wouldn't set any time for his return. "I don't set timetables," he said. "I'm just going to do everything they ask me to do, plus some, and hopefully that's going to get me back as fast as possible." Arizona coach Ken Whisenhunt fully expects Fitzgerald to be back for the season opener at St. Louis on Sept. 12.