CHICAGO -- Chicago Cubs top pitching prospect C.J. Edwards is in town to get his right shoulder checked out by team doctors after experiencing “fatigue” during a bullpen session between starts.

Edwards, 22, is 1-0 with a 2.61 ERA for Double-A Tennessee in four starts. He’s struck out 20 in 20.2 innings pitched. He was acquired by the Cubs last season in the trade that sent Matt Garza to the Texas Rangers. Edwards went on to win minor league pitcher of the year for 2013.

He’s the fourth ranked prospect -- and top pitcher -- in the Cubs organization. He posted a 1.96 ERA for Single-A Daytona after the trade last year, helping that team to a Florida State League Championship.