Chicago Cubs Pitchers of the Month - June 2025

[Andrew Wright]

Image courtesy of Thieres Rabelo

The month of June was extremely kind to the Chicago Cubs bullpen and rather unkind to the starting rotation. Shota Imanaga did return for the latter, but it was the relief corps that kept things together for the North Siders last month. Let's show some love to the team's best pitchers from June.

#3 - Chris Flexen - 7 G, 1.32 ERA, 13 2/3 IP, 9 H, 4 BB, 6 K

Flexen has been a huge surprise out of the bullpen for Chicago this season. He made 12 appearances in a Cub uniform before allowing his first earned run of the season. He allowed two runs to the Mariners just under two weeks ago and outside of that appearance, he was nearly perfect in June. It was similar to his May performance when he didn't allow an earned run in eight appearances and 14 1/3 innings pitched. The four walks compared to just six strikeouts could be a concern moving forward, but if he continues to throw up zeroes in the stat sheet, not a soul will care about the walk or strikeout rates.

#2 - Matthew Boyd - 5 GS, 1.74 ERA, 30 1/3 IP, 6 BB, 18 K

Boyd has been the most reliable starting pitcher for the Cubs all season long, and he turned in his best month of the season in June. Opponents hit just .173 against him, an excellent reason for his success on the mound. He never allowed more than two earned runs in a start, the only starting pitcher besides Shota Imanaga to do so (and he returned late in the month). As we've written about here at North Side Baseball, Boyd has been so reliable and inarguably the Chicago's best pitcher all season long. He's truthfully been one of the best and most underrated pitchers in the game this season and is rightfully deserving of a spot in the 2025 All-Star Game. 

#1 - Drew Pomeranz - 10 G, 0.00 ERA, 9 IP, 9 H, 3 BB. 6 K

It was rather easy to put the guy that had a 0.00 ERA not only last month, but for the entire season(!) at the No. 1 spot. Those are Pomeranz's numbers, and he has been exceptional in his first season back in the major leagues since 2021. He's given the Cubs a second reliable left-handed arm in the bullpen alongside Caleb Thielbar, and he is arguably the most reliable reliever in Craig Counsell's bullpen. His opponent batting average did take a major jump from May (.118) to June (.281), and that could be something to keep a close eye on. Just like Flexen, though, as long as Pomeranz keeps putting up zeroes, nobody will care what the advanced metrics say.

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It will be of utter importance that not only the three pitchers list above, but the rest of the Cubs pitching staff, have a good month of July and help Chicago extend their division lead and separate themselves from the rest of the NL Central. Expect the team to add some new faces to their crop of arms ahead of the stretch run.

What do you think about our list? Are there any other pitchers you'd want to put on this list? Let us know in the comments!

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