KANSAS CITY, MO - JUNE 4: Adam Wainwright #50 of the St. Louis Cardinals pitches in the first inning against the Kansas City Royals at Kauffman Stadium on June 4, 2014 in Kansas City, Missouri. (Photo by Ed Zurga/Getty Images) By Ed Zurga
ST. LOUIS, MO - MAY 20: Adam Wainwright #50 of the St. Louis Cardinals pitches against the Arizona Diamondbacks during the first inning at Busch Stadium on May 20, 2014 in St. Louis, Missouri. (Photo by Jeff Curry/Getty Images) By Jeff Curry
The St. Louis Cardinals are optimistic that the discomfort in ace Adam Wainwright's right elbow is not a serious problem.
Wainwright returned to St. Louis on Wednesday for tests. The right-hander became the NL's first nine-game winner on Tuesday night by pitching seven innings in a 1-0 win at Tampa Bay.