June’s MLB Defensive Players of the Month

Headshots of Junior Caminero wearing a Rays hat, Brayan Rocchio wearing a Guardians hat, Joe Mack wearing for Marlins hat. Caminero ahd Mack both have big grins. Rocchio is straight-faced. Caminero has a black beard and is wearing a large necklace

Three players earned the honor for June and it’s fair to say that Junior Caminero’s selection was unexpected.

Rays third baseman Junior Caminero closed June with 7 home runs in his last 5 games. He’s hitting .333 with a 1.041 OPS in his last 42 games. Yet that may have obscured something important.

His defense was pretty good too.

In fact, it was so good that Caminero is one of our Defensive Player of the Month selections for June. Our other honorees are Guardians shortstop Brayan Rocchio and Marlins catcher Joe Mack.

Caminero led third basemen with 8 Defensive Runs Saved for the month, pulling his season total at the position up from -5 entering the month to 3 Runs Saved. His 5 Good Fielding Plays were one shy of the MLB lead at third base (think of those highlight-reel plays and things like keeping a ball from getting through the infield).

Caminero did a variation of this last year too. He entered June 2025 with -7 Runs Saved but got better as the season progressed and improved to -5 by the end of 2025. This season, he’s already a positive defender in terms of his Runs Saved. The improvement has come in his being better at fielding balls hit to his left, at least so far.

June Defensive Runs Saved Leaders – 3rd Base 

Player

Team

Runs Saved

Junior Caminero

Rays

8

Alex Bregman

Cubs

7

Matt Chapman

Giants

5

Kazuma Okamoto

Blue Jays

4

David Hamilton

Brewers

4

Rocchio looked like he was going to be a defensive star in 2024 when he totaled 11 Runs Saved as a rookie. But last season his numbers took a hit both at shortstop and second base, as he split time between the positions.

This season his shortstop numbers weren’t great for the first couple of months but they got a boost in June. His 7 Runs Saved at shortstop were one shy of the MLB lead (Mookie Betts had 8). Rocchio’s Defensive Runs Saved for the season went from -4 to 3, even as his offensive numbers took a hit after a hot start.

June Defensive Runs Saved Leaders – Shortstops

Player

Team

Defensive Runs Saved

Mookie Betts

Dodgers

8

Brayan Rocchio

Guardians

7

Geraldo Perdomo

Diamondbacks

6

Cooper Pratt

Brewers

4

Jorge Mateo

Braves

3

Zach McKinstry

Tigers

3

Mack and the Marlins are coming off an incredible June in which the team went 20-6 and the pitching staff posted an MLB-best 3.01 ERA. Mack, a rookie who didn’t debut until early May, started 21 of those games and the Marlins went 17-4 in them.

Mack has dramatically changed the Marlins’ catching situation for the better. Last year, the team allowed an MLB-high 191 stolen bases. This season, basestealers have 23 steals in 38 attempts against Mack, but 53 in 60 attempts against Miami’s other catchers. In June, Mack threw out 9 of 17 would-be basestealers. He rates as an above-average pitch framer thus far too. His combination of skills has put him among the catcher leaders for Runs Saved this season.

2026 Defensive Runs Saved Leaders – MLB Catchers

Player

Team

Defensive Runs Saved

Luis Torrens

Mets

8

Brandon Valenzuela

Blue Jays

7

Joe Mack

Marlins

6

Tyler Heineman

Angels

6

Dillon Dingler

Tigers

6

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