Zac Gallen is in the midst of one of the most dominant stretches of pitching in MLB history. As the Arizona Diamondbacks head down the homestretch of an otherwise unnoteworthy season, the 27-year-old Gallen is on an unbelievable tear.

Gallen has not allowed an earned run since Aug. 2, posting six straight shutouts and going fairly deep in each of them. He reached an achievement that has only been done four times in the modern era and hasn't been since Zack Greinke did it in 2015. He reached six consecutive starts going at least six innings with no runs allowed, becoming the first non-Los Angeles Dodgers hurler to achieve the feat.

The fact that only one other active pitcher has done what Zac Gallen is doing — and that pitcher being a former Cy Young winner and six-time All-Star — shows how unreal he has been. Pitchers like Jacob deGrom, Clayton Kershaw, Justin Verlander and Max Scherzer haven't shut out the opposition for as long as Gallen is right now.

Article Continues Below
More Diamondbacks News
New York Yankees manager Aaron Boone (17) argues with home plate umpire Bruce Dreckman (1) after Dreckman ejected Yankees hitting coach James Rowson (not pictured) from the game against the Boston Red Sox during the fourth inning at Yankee Stadium.
MLB rumors: Diamondbacks star named ‘ideal fit’ for Yankees tradeBenjamin Adducchio ·
Arizona Diamondbacks pitcher Zac Gallen (23) throws against the Cincinnati Reds in the first inning at Great American Ball Park.
Diamondbacks’ Zac Gallen gets 100% real on constant trade rumorsBenjamin Adducchio ·
Arizona Diamondbacks starting pitcher Zac Gallen leaves the game against the Pittsburgh Pirates in the sixth inning at Chase Field
Zac Gallen, Diamondbacks staying optimistic despite brutal campaignQuinn Allen ·
Arizona Diamondbacks first base Josh Naylor (22) hits a walk off grand slam home run against the Seattle Mariners in the eleventh inning at Chase Field.
Diamondbacks avoid disaster with Josh Naylor walk-off grand slamRexwell Villas ·
A detail view of a bat in the Arizona Diamondbacks dugout in the first inning in the game against the Cincinnati Reds at Great American Ball Park.
MLB umpire suffers concussion during Diamondbacks-Reds gameRexwell Villas ·
Arizona Diamondbacks Corbin Burnes (39) pitches against the Pittsburgh Pirates at Chase Field in Phoenix, on May 27, 2025. Jacob deGrom, Zach Eflin, Tony Gonsolin
3 trades Diamondbacks must make after Corbin Burnes Tommy John surgery updateZachary Howell ·

Across his unreal streak, Gallen has 46 strikeouts and has allowed only 11 hits and eight walks His run is the eighth-longest streak of scoreless innings in the live-ball era. The Diamondbacks star is knocking on the door of the franchise record, held by Brandon Webb. Arizona made the right call to keep him at the trade deadline.

With an ERA of 2.42 on the season, Zac Gallen is proving to be a star that the Diamondbacks can rely on for the future. The team will need as many as they can get with the division-rival Dodgers and San Diego Padres having so many stars.