Toronto Blue Jays Minor League Relievers of the Month - June 2025

[Leo Morgenstern]

While starting pitching prospects tend to steal the spotlight, there are plenty of relievers in the Blue Jays organization that deserve your attention too. Today, I'm going to highlight the best of those bullpen arms from June. 

For the sake of featuring prospects, I chose not to include any relievers with significant major league experience in this piece. However, I'd like to give a brief shout-out to Dillon Tate and Tommy Nance, both of whom were excellent for the Buffalo Bisons last month. Tate pitched to a 1.80 ERA with 11 strikeouts in 10 innings of work. Nance gave up a few more runs (3.37 ERA), but he also struck out 16 batters and walked only three. It's nice to know the Blue Jays have some experienced bullpen depth they can call upon should they need it.

Now, onto the prospects!

Honourable Mentions
Bo Bonds, RHP (High-A Vancouver)
June Stats: 1-0 (4 G), 4.1 IP, 2.08 ERA, 9 K, 2 BB

Bonds is one of the more promising relief prospects in the system right now. He was off to a terrific start in June before a trip to the injured list cut his month short. In four appearances, he gave up just one run on four hits while striking out nine of the 19 batters he faced. 

Javen Coleman, LHP (Single-A Dunedin/High-A Vancouver)
June Stats: 0-0 (6 G), 8.0 IP, 1.13 ERA, 11 K, 6 BB

Coleman earned a promotion to Vancouver after pitching to a 1.50 ERA through his first five appearances in June. He then threw two scoreless, hitless innings in his High-A debut, striking out four and walking one. Although he signed with Toronto as an undrafted free agent just last summer, the 23-year-old is an arm that could quickly climb the minor league ladder.

Aaron Munson, RHP (High-A Vancouver)
June Stats: 2-0 (6 G), 12.1 IP, 2.92 ERA, 14 K, 3 BB

Irv Carter just edged out his teammate Munson for the fifth spot on my ranking, but considering how similar their numbers were in June, I had to make Munson an honourable mention. The 23-year-old needed to work on bringing his walk rate down in 2025, and he has finally begun to do just that. After walking 12 batters over 19.1 innings in April and May, he only issued three free passes in June. Even better, he struck out the same number of hitters in June as he had in April and May combined.

5. Irv Carter, RHP (High-A Vancouver)
June Stats: 0-0 (6 G), 13.1 IP, 2.70 ERA, 14 K, 3 BB

Carter was once a top-30 prospect for the Jays, but he dropped off top prospect lists following an injury-marred 2023 season and a move to the bullpen in 2024. Yet, if his June performance is any indication, he might be turning a corner and becoming a name to follow once more. Like Munson, he posted an impressive 14:3 strikeout-to-walk ratio in the month, and after giving up seven home runs in April and May, he didn't let any balls leave the yard in June.

4. Eminen Flores, RHP (Single-A Dunedin)
June Stats: 1-0 (6 G), 10.0 IP, 2.70 ERA, 16 K, 4 BB

We've always known Flores had the potential to overpower opponents, but he's struggled in the past to rack up the strikeout numbers you'd hope for from a pitcher with such poor control. He increased his strikeout rate in May, but the walks were still higher than would be ideal. So, it was great to see him build upon that in June. He kept his K-rate up, striking out more than two-thirds of the batters he saw, while walking fewer than 10%. If he continues to improve like this, don't be surprised if he gets to call to Vancouver later this summer.

3. Luis Victorino, RHP (DSL Blue Jays Red)
June Stats: 0-0 (7 G), 10.1 IP, 0.00 ERA, 13 K, 5 BB

Is it bad form for me to admit I hadn't heard of Luis Victorino before I started writing today? Or is it the perfect way to demonstrate how impressive he was in June, going from being an unknown name to a featured player on this list?

Victorino, 22, signed with the Blue Jays organization in May after he was released by the Astros. He's several years older than the average player in the Dominican Summer League, but his performance last month was undeniable. He only gave up six hits over 10.1 innings, collecting two saves in the process. While he walked five of the 40 batters he faced (12.5% BB%), he compensated by striking out 13.

2. Pat Gallagher, RHP (High-A Vancouver/Double-A New Hampshire)
June Stats: 2-0 (8 G), 16.1 IP, 2.20 ERA, 21 K, 7 BB

The Jays transitioned Gallagher to a bulk relief role this season. It's only been three months, but it's safe to say they made the right call. He has a 1.22 ERA over 22 games (44.1 IP), with 51 strikeouts to 17 walks in 2025. 

The 25-year-old continued to thrive in June, earning a promotion to Double-A New Hampshire at the end of the month. He took on the new challenge with aplomb, striking out five, walking none, and pitching to a 2.08 ERA in his first 4.1 innings at the higher level.

1. Chay Yeager, RHP (High-A Vancouver)
June Stats: 2-0 (8 G), 12.2 IP, 0.00 ERA, 15 K, 4 BB

I had to make a lot of difficult decisions while constructing this list, but deciding who to put at the top wasn't one of them. Yeager was the easy choice for Jays Centre's Minor League Reliever of the Month. He tossed 12.2 scoreless innings in June, collecting two wins and two saves. He struck out 15 (31.3% K%) and held opponents to a .140 batting average.

Yeager had made tremendous strides in 2025, his second campaign with Vancouver. Last year, he struggled to a 5.50 ERA and 5.62 FIP. So far this season, he has a 1.71 ERA and 2.85 FIP. The righty has seemingly traded groundballs for strikeouts, and it's paying off handsomely. His K-rate has almost doubled, increasing from 17.0% in 2024 to 33.3% in 2025, and he's only two strikeouts away from surpassing last year's total – and it's only the beginning of July.

Chay Yeager may not be a well-known name in the system quite yet, but he's doing everything he can to change that. 

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