4:59pm: There does not appear to be any structural trouble with Bradley’s elbow, Berthiaume tweets.

2:16pm: Top Diamondbacks prospect Archie Bradley has been sent to the minor-league disabled list with a mild flexor strain in his elbow, MLB.com’s Steve Berthiaume tweets. Heading into the season, Bradley was universally considered one of the best prospects in baseball, and a likely candidate for a summer promotion to the big leagues. After two solid starts at Triple-A Reno to begin the season, however, he struggled in his last three outings, allowing 12 runs while striking out 15 and walking eight in 12 1/3 innings.

MLB.com currently ranks Bradley the No. 7 prospect in baseball. Baseball America’s Prospect Handbook 2014 ranks Bradley the Diamondbacks’ best prospect, praising his outstanding, mid-90s fastball and plus curveball. Last season, he posted a 1.84 ERA with 9.6 K/9 and 4.1 BB/9 in 152 innings split between Class A+ and Double-A.