Maybe not serious question, because you know if the Dodgers force a Game 5, Wainwright would want the ball unless he was literally on an operating table under anesthetic, and even then he’d still probably try to pitch. However, there’s a chance he may not. Derrick Goold of the Post-Disptach reports:
Cardinals manager Mike Matheny listed Lynn as a possible starter for a decisive Game 5 should the Dodgers force one with a victory tonight.
Wainwright is the planned starter, but the club wants to make sure it has an alternative if the soreness or stiffness that has complicated the second half intrudes on his availability.
At times in the second half he had a dead arm and battled some (for him) ineffectiveness, but you have to figure that it’d take something more serious than mere stiffness to keep him off the bump Thursday if he is needed.