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8:55Sean Manaea to Start the Season on the Injured List!
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0:34Highlights: Mariners at Diamondbacks (6/11)
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1:34Highlights: Mariners at Diamondbacks (6/9)
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1:13MLB Trade Deadline: Diamondbacks Look to Deal Before Deadline
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0:52MLB Power Rankings: Diamondbacks Lose Pitcher Corbin Burnes to Injury on Sunday
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8:57Must-Add Waiver Wire Options! AJ Smith-Shawver or Gunnar Hoglund?
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2:05Highlights: Diamondbacks at Phillies (5/4)
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10:26Top 5 Prospects to Stash! Moises Ballesteros Hype!
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1:53Highlights: Braves at Diamondbacks (4/26)
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11:03Add Reese Olson or Andrew Heaney?
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1:03MUST-SEE: Cubs take down D-Backs in game of the year candidate
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8:44Are Kyren Paris & Max Meyer Must-Add Players?
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0:55Highlights: Orioles at Diamondbacks (4/9)
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9:14Injury Replacements & Rockies Prospect Promotions
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3:27Boomer and Gio: The Yankees' Torpedo Bat is Drawing Attention
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9:44David Bednar Optioned, Closer Carousel & Casey Mize's Strong Start!
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9:16H2H Points Mock Draft Recap!
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8:39Spring Training Updates! Injuries, Velocity & Fun Debuts!
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8:522025 Relief Pitcher Preview! Sleepers, Breakouts & Busts at the Position!
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2025 Pitching
| STATS |
IP
Innings Pitched
|
W
Wins
|
L
Losses
|
ERA
Earned Run Average
|
SO
Strikeouts
|
BB
Base on Balls (Walk)
|
|---|---|---|---|---|---|---|
| Regular Season | 80.1 | 4 | 8 | 5.15 | 75 | 36 |
Top Zac Gallen News
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Diamondbacks' Zac Gallen: Allows three homers in loss
Gallen (4-8) took the loss against the Reds on Sunday, allowing four runs on six hits and three walks with five strikeouts over 6.2 innings.
Gallen was locked in a 2-2 tie through six innings before surrendering a go-ahead two-run homer to Matt McLain with two outs in the seventh. The 29-year-old was ultimately undone by the long ball and continues to struggle with his control, having issued three or more free passes in eight of 14 starts this season. He'll carry a 5.15 ERA, 1.33 WHIP and 75:36 K:BB across 80.1 innings into a home matchup with the Padres next weekend.
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Diamondbacks' Zac Gallen: Picks up fourth win
Gallen (4-7) earned the win Tuesday in Atlanta after giving up three runs (one earned) on four hits and one walk over seven innings. He struck out four.
The right-hander pounded the zone with 65 of his 89 pitches going for strikes, and the single walk marks the first time he hasn't issued multiple free passes in a start since April 2. Gallen entered Tuesday with an 8.02 ERA and 17:11 K:BB in his previous four starts, but he was able to get back in the win column with his fifth quality start of the campaign. He'll carry a 5.13 ERA and 1.33 WHIP over 73.2 innings into his next start, which tentatively lines up for Sunday in Cincinnati.
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Diamondbacks' Zac Gallen: Stumbles late in loss
Gallen (3-7) took the loss against the Pirates on Wednesday, allowing six runs (five earned) on six hits and three walks with three strikeouts over five innings.
Gallen entered the sixth inning with a shot at a quality start but was unable to record an out and was ultimately charged with three runs in the frame. The 29-year-old has now allowed at least four earned runs in four consecutive outings and in seven of his 12 starts this season. He'll take a disappointing 5.54 ERA, 1.40 WHIP and 66:32 K:BB across 66.2 innings into a road matchup with Atlanta next week.
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Diamondbacks' Zac Gallen: Pairs well with Herrera
Arizona manager Torey Lovullo had Jose Herrera catch Gallen for Friday's series opener against St. Louis, after the pitcher had struggled in his previous outing, Joe Harris of MLB.com reports. The right-hander threw five strong innings before running into trouble in the sixth in a 4-3 loss.
It's been a rough start to the 2025 season for Gallen, whose 5.25 ERA is the highest its been since he became a full-season starter in the majors. However, when Herrera has caught him, Gallen's ERA is 3.56 compared to 6.89 when Gabriel Moreno is behind the dish. "We got a pretty good relationship," Gallen said. "I think he knows what I'm looking for out of the shapes of my pitches. He kind of knows when certain things aren't right, not necessarily to shy away from those pitches, but use them a little differently. So yeah, there's definitely a comfort there." Given the pitcher's results thus far, Lovullo may opt to pair Gallen and Herrera going forward.
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Diamondbacks' Zac Gallen: Struggles continue in sixth loss
Gallen (3-6) took the loss Friday against the Cardinals after allowing four runs on three hits and four walks in 5.2 innings. He struck out four.
Despite giving up just three knocks, Gallen yielded at least four runs in his third straight start. The veteran right-hander also tied a season worst in walks, and it was a bases-clearing triple by Nolan Arenado that drove in a trio of runs in the sixth inning to end the hurler's night. Gallen continues to struggle in 2025, as he holds a 5.25 ERA, 1.36 WHIP and 63:29 K:BB across 61.2 frames, but he'll have a prime opportunity to get back on track his next time out versus the Pirates, who are scoring a lowly 2.5 runs per game over their last 28 outings.
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Diamondbacks' Zac Gallen: Rocked by lowly Rockies
Gallen allowed six runs on eight hits and two walks while striking out five batters over five innings in a no-decision against Colorado on Saturday.
Gallen fell behind early, as a pair of Rockies homers resulted in three first-inning runs. The right-hander went on to give up two more long balls before his outing came to an end, though an explosive Arizona offense saved Gallen from taking a second straight loss. Gallen has had an up-and-down season so far -- he's collected four quality starts but has also surrendered four or more runs in five different outings. Overall, he's pitched to an uncharacteristically poor 5.14 ERA, which is on pace to be the worst mark of his career by a wide margin.
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Diamondbacks' Zac Gallen: Knocked around by Dodgers
Gallen (3-5) allowed four runs on 10 hits and two walks while striking out five over 5.2 innings to take the loss Sunday versus the Dodgers.
Gallen was able to keep the ball down on his watch, but the Dodgers still scraped together plenty of offense. After allowing just two runs over his previous 13 innings, this was a step back for Gallen, though it was far from a disaster. The veteran right-hander now has a 4.59 ERA, 1.31 WHIP and 54:23 K:BB across 51 innings through nine starts this season. He's got a favorable matchup ahead, as he's projected for a home start against the Rockies when he next takes the mound.
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Diamondbacks' Zac Gallen: Wins again over Mets
Gallen (3-4) allowed a run on two hits and three walks while striking out six over seven innings to earn the win over the Mets on Tuesday.
Gallen posted his fourth quality start of the season, and this was his longest outing yet. He threw 64 of 101 pitches for strikes as he defeated the Mets for the second start in a row. The right-hander has allowed just two runs over his last 13 innings, trimming his ERA to 4.37 with a 1.21 WHIP and 49:21 K:BB across 45.1 innings over eight outings this season. Gallen will need to cut back on walks -- his 4.2 BB/9 is the highest of his career and noticeably above the elevated 3.3 BB/9 he had in 2024. He'll have a tough outing on tap this weekend, as he is projected to make his next start at home versus the Dodgers.
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Diamondbacks' Zac Gallen: Excellent in second win
Gallen (2-4) earned the win in Thursday's 4-2 victory over the Mets, allowing one run on two hits and three walks over six innings. He struck out eight.
The Mets had few answers for Gallen, who allowed just one hit through his first five scoreless innings before giving up a solo home run to Juan Soto in the sixth. It was an encouraging outing for the right-hander, who had struggled to a 6.65 ERA over four starts coming into Thursday. Gallen's ERA now sits at 4.93 on the year with a 1.30 WHIP and 43:18 K:BB across seven outings (38.1 innings). He'll look to build on Thursday's performance in his next start, currently scheduled for next week at home in a rematch with the Mets.
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Diamondbacks' Zac Gallen: Takes fourth loss Friday
Gallen (1-4) took the loss Friday against Atlanta after allowing three runs on four hits and two walks in five innings. He struck out six.
Gallen kept the hard contact in check to a degree -- it was just his second start this year in which didn't give up a home run -- but he yielded two RBI doubles during Atlanta's three-run second inning. The right-hander was able to tie a season high with 103 pitches, but it was his fourth consecutive outing with multiple walks allowed. Gallen has a disappointing 5.57 ERA, 1.39 WHIP and 35:15 K:BB over 32.1 frames in 2025, and things won't get much easier in his next scheduled appearance on the road versus the Mets.
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Diamondbacks' Zac Gallen: Hit hard by Cubbies
Gallen (1-3) took the loss Saturday, coughing up six runs on seven hits and two walks over six innings as the Diamondbacks fell 6-2 to the Cubs. He struck out five.
Four of the hits off Gallen went for extra bases, including back-to-back homers by Seiya Suzuki and Michael Busch in the second inning. The right-hander has been tagged for at least four runs in three of his first five starts this season, leaving him with a 5.60 ERA, 1.43 WHIP and 29:13 K:BB through 27.1 innings. Gallen will look to rebound in his next outing, which is scheduled to come at home next weekend against Atlanta.
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Diamondbacks' Zac Gallen: Quality start in no-decision
Gallen took a no-decision Sunday against the Brewers. He struck out five over six innings while allowing two runs on five hits and three walks.
The Arizona right-hander looked sharper in this 89-pitch outing, firing 56 strikes to bag his second quality start of the season. The only blemish on Gallen's outing was a second inning two-run homer by William Contreras, which snuck out of the park, measuring 375 feet. With this effort, Gallen lowered his season ERA from 5.28 to 4.64 and will look to keep rolling in his next start, currently slated to be at the Cubs this weekend.
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Diamondbacks' Zac Gallen: Struggles with control vs. Orioles
Gallen (1-2) allowed five runs on seven hits and four walks while striking out two batters over 4.2 innings in a loss to Baltimore on Monday.
Gallen's outing was a stark contrast to his 13-punchout, zero-walk win over the Yankees last Wednesday. Against the Orioles, the right-hander struggled mightily with his control, throwing only 50 of 96 pitches for strikes and issuing four free passes. Two of the four batters Gallen walked came around to score, and he failed to complete five frames for the second time in three starts. Despite Gallen's dominant victory last week against New York, his ERA stands at 5.28 on the season, which reflects how poor his other two outings have been. He'll try to rebound the next time he takes the mound, which is lined up to be Sunday versus Milwaukee.
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Player Bio
| HT/WT: 6-2, 189 lbs |
| Birthplace: Gibbsboro, NJ |
| Age: 29 |
| School: North Carolina |
| Experience: 6 |
| Bats/Throws: R, R |