Parker Messick Is off to One of the Best Rookie Pitcher Starts You’ve Never Heard Of

If you told me you weren’t locked into the August call-ups for a middling Cleveland Guardians team, I wouldn’t hold that against you. Honestly, if you told me the only thing you knew about the team this year was that its own players couldn’t stop gambling on games, I wouldn’t be offended either.

Still, the Cleveland pitching factory might’ve found another diamond in the rough in 24-year-old Parker Messick. The 2022 second-round pick out of Florida State was seen as a low-ceiling draft option, but maybe Cleveland was the right organization to help him improve his velocity in the minors.

The velocity increase never came, but what stuck was his ability to attack the strike zone. Throughout college, the minors, and now the majors, the big lefty has been able to fill up the zone consistently.

Messick is only the second player in MLB history to start a career with two consecutive outings of 6-plus strikeouts, one or fewer runs allowed, and one or fewer walks. The only other player to pull that off is Joe Musgrove, who has gone on to carve out a pretty successful career since joining the Padres in 2021.

This season has been a massive disappointment for Cleveland, a team that came three wins away from a World Series appearance last year. Then the suspensions of Luis Ortiz and Emmanuel Clase killed any momentum for a late postseason push or trade deadline haul.

But Messick has quickly become a valuable addition to this roster. It’s too early to judge his advanced metrics fully, but the early returns are encouraging.

In the minors, he had a 29.2% strikeout rate (80th percentile), a .267 xwOBA (83rd percentile), and a 30.5% whiff rate (70th percentile). Now in the majors, he hasn’t logged enough innings for percentile rankings, but he’s carrying a 24% strikeout rate, a 29.6% whiff rate, and a 2.84 xERA — one of the best in baseball.

If you don’t get hit hard, consistently miss bats, and limit walks, you’re going to succeed in the majors. Messick does all of that, with a fastball that plays up because of the extension he gets on his delivery.

The 2025 season felt like one to forget in Cleveland, but could Messick change that outlook? Gavin Williams and Logan Allen have put together the best seasons of their careers, and if John Means or Tanner Bibee can bounce back next year, this rotation could be far less of a weakness in 2026.

Now, how do the Guardians figure out the other side of the baseball? That’s a trickier question.