St. Louis Cardinals manager Mike Matheny talks with pitcher Trevor Rosenthal before Rosenthal threw his first bullpen session during St. Louis Cardinals spring training on Wednesday, Feb. 15, 2017, at Roger Dean Stadium in Jupiter, Fla. Photo by Chris Lee, clee@post-dispatch.com St. Louis Cardinals manager Mike Matheny talks with pitcher Trevor Rosenthal before Rosenthal threw his first bullpen session during St. Louis Cardinals spring training on Wednesday, Feb. 15, 2017, at Roger Dean Stadium in Jupiter, Fla.