JUPITER, Fla. (AP) — Adam Wainwright has been diagnosed with an abdominal strain but the St. Louis ace could be available to pitch the Cardinals’ opener at Wrigley Field on April 5. Wainwright strained the muscle on Monday while putting a 45-pound weight back on a rack. General manager John Mozeliak said Thursday the strain is about belt high.

Wainwright said the pain originally felt like a twinge when it first occurred and the injury bothered him when he ran or lunged but did not affect his pitching. He walked off a practice field Tuesday following the team’s stretch, returned to St. Louis on Wednesday and was examined by Dr. Michael Brunt on Thursday.