The MLB free agent landscape has mostly cleared, yet several influential players remain available, with Arizona Diamondbacks pitcher Zac Gallen being the standout.
Gallen, 30, recently registered a career-high ERA of 4.83 in the 2025 season, but he has consistently ranked among the premier starting pitchers since his MLB debut in 2019. His capabilities can significantly enhance any pitching rotation in need of improvement.
Below are the top three potential destinations for Gallen if he leaves Arizona.
The Baltimore Orioles have been on the hunt for a top-tier pitcher since losing Corbin Burnes. Acquiring Gallen would alleviate concerns about their rotation, which ranked low in several categories, including 26th in batting average against (.265) and 24th in ERA (4.65) last season.
Pairing Gallen with emerging talents like lefty Trevor Rogers, who had a remarkable 1.81 ERA, and newly-acquired right-hander Shane Baz, would provide Baltimore with a more formidable rotation to compete in the challenging AL East.
The San Francisco Giants find themselves in a challenging position within the National League West but have the talent to aim for the postseason. By adding Gallen, they could significantly bolster their rotation, which struggled last season, ranking 23rd overall in both WHIP (1.34) and opponent batting average (.255).
Gallen’s dominant 3.20 ERA over the past three seasons illustrates his potential impact. Supplementing their roster with an ace like him could mean enhanced competitiveness for the Giants, especially with the recent addition of key players.
Lastly, the Oakland Athletics, who finished with 76 wins last season and boast one of the best young positional cores, would greatly benefit from Gallen. His experience and prowess would anchor a rotation that has struggled, ultimately giving the A’s a realistic shot at playoff contention.
