Making his major league debut, Cooper Hjerpe retired all 12 batters he faced, striking out six of them, for a win in relief against the Rockies on Sunday.
Hjerepe needed just 54 pitches to get through four. That’s 20 fewer pitches than he threw in his last two Triple-A starts, but the Cardinals still probably had four innings down as his limit; he hasn’t exceeded that total in 16 appearances since returning from Tommy John. Hjerpe averaged 90.6 mph with his fastball today, but his big sweeper was very effective, producing a 47 percent CSW and no hard-hit balls. Hjerpe will probably continue to piggyback off of Kyle Leahy’s starts for now.