Two years after moving from shortstop to the pitching mound, Cardinals prospect Sam Tuivailala made his major league debut with the club in 2014. Although he can reach the mid-90’s with his fastball, Tuivailala is continuing to work on improving the control of his secondary pitches in the Arizona Fall League this year. Read more about Tuivailala’s story and improvements on cardinals.com.

Chris Brown, St. Louis Baseball Today