Carlos Martinez is moving on to the next challenge.
After striking out 50 batters over 38.2 innings in eight starts for Quad-Cities, the hard-throwing 19-year-old pitcher was promoted Monday by St. Louis to high-A Palm Beach.
Martinez was sent to the Florida State League club along with all-star infielder Starlin Rodriguez, a .263 hitter through 41 games with the River Bandits whose roster spot was taken by first-round draft pick Kolten Wong.
"Tim (Leveque, the River Bandits pitching coach) has done a good job with Carlos here, and it will be good for him to matched up with Dennis Martinez, our pitching coach in Palm Beach," Cardinals vice president of scouting and player development Jeff Luhnow said.
Martinez, whose fastball averaged 97 mph during his time with Quad-Cities, posted a 3-2 record with a 2.33 ERA with the River Bandits.
"Carlos could have continued to compete here," Luhnow said. "We believe in challenging our prospects, and this will provide Carlos with his next challenge."
Taking Martinez's spot on the roster is pitcher Justin Edwards, a left-hander who was named a New York-Penn League all-star a year ago.
A 28th-round pick of the Cardinals in 2009 from Kennesaw State, Edwards joins Quad-Cities from Batavia, where he has pitched the past three seasons, including a scoreless first start in 2011.