Rockies left-handed pitching prospect Tyler Matzek struck out 11 and allowed two hits, two walks, and one run in his Triple-A debut. Matzek struck out seven in six innings during spring training, while keeping his walks down. Matzek's struggles have been well documented, including spending two weeks with his high school coach in 2011 after struggling with his command and pitch velocity. He had a good year in Double-A last year, though his strikeout rate dropped precipitously. Keep an eye on him, as he could be called up to be the lefty who splits up Gray and Butler for the next few years.