Pictures of Trevor Rosenthal 2017 -

After graduating from Lee's Summit West, Rosenthal attended Cowley County Community College in Arkansas City, Kansas, to play collegiate baseball for the Cowley County baseball team. In 2009, the team qualified for the Junior College World Series. When Cardinals scout Aaron Looper first spotted Rosenthal, he was a shortstop who had just started pitching – he had totalled ​4 2⁄3 innings pitched (IP) at that time – and was throwing well over 90 miles per hour (140 km/h) off the mound in a tournament. Looper watched him for just one inning in that tournament. Cardinals director of scouting Jeff Luhnow remarked that “Looper thought he had ability and could get better, had great arm action, great stuff and was pretty good today but could get a lot better. ”