Diamondbacks Bring Merrill Kelly Back on Two-Year Deal

The Arizona Diamondbacks are making a clear statement this offseason: they are committed to returning to postseason contention. On Sunday, the team reached an agreement with veteran starting pitcher Merrill Kelly on a two-year, $40 million deal, according to Ken Rosenthal of The Athletic. The move reunites Kelly with the team where he spent the bulk of his career.

Kelly, 36, originally pitched for Arizona for more than six seasons before being traded to the Texas Rangers at the 2025 trade deadline. During his time in Texas, he provided solid innings down the stretch, helping the Rangers in their playoff push, though his numbers were slightly off from his career averages.

For the Diamondbacks, this is a familiar and reliable presence returning to the rotation. Kelly was a mainstay in Arizona’s pitching staff, winning 62 games with a 3.74 ERA while leading the majors in starts with 33 in 2022. His experience and consistency make him a valuable asset for both the regular season and potential postseason games.

Arizona’s front office has been active this offseason, already signing right-hander Michael Soroka to a one-year deal. The return of Kelly signals that the team is prioritizing pitching depth, an essential factor as they prepare to navigate a competitive National League West in 2026.

1. Kelly’s Return and Arizona Roots

Merrill Kelly’s return to Arizona marks a full-circle moment in his career. Spending nearly seven seasons with the Diamondbacks, he established himself as a dependable starter in a rotation that often relied on consistency over flash. His tenure included standout performances in both the regular season and the playoffs. During the 2023 postseason, Kelly proved he could handle high-pressure situations. He pitched a shutout over 6 1/3 innings against the Los Angeles Dodgers in the NLDS and delivered a one-run, seven-inning performance in Game 2 of the World Series versus the Texas Rangers. Such outings solidified his reputation as a reliable playoff pitcher. The veteran’s leadership extends beyond the numbers. Kelly’s presence provides a stabilizing influence for younger pitchers and adds depth to a rotation that will be critical as the Diamondbacks contend in the NL West. Manager Torey Lovullo will now have a proven arm to turn to on key matchups. While Kelly’s 2025 numbers with Texas—3-3 with a 4.23 ERA—were not at his career peak, returning to a familiar environment may help him regain his best form. His ability to eat innings and deliver quality starts will be a key factor in Arizona’s pursuit of a postseason berth.

2. Building a Strong Rotation

Arizona’s offseason strategy has been clearly focused on pitching reinforcement. In addition to signing Kelly, the team secured Michael Soroka on a one-year contract, further boosting depth in the rotation. These moves reflect an understanding that strong starting pitching is essential in a division featuring formidable offenses like the Dodgers and Padres. Kelly and Soroka offer complementary skills. Kelly brings experience, durability, and postseason know-how, while Soroka adds a younger arm with upside. Together, they create a more balanced rotation capable of handling the grind of a 162-game schedule. The Diamondbacks’ front office has indicated that they are not finished improving the roster. Trade rumors have swirled around star infielder Ketel Marte, suggesting that further adjustments could be made before spring training. How Arizona allocates resources this offseason will have a direct impact on their playoff prospects. Manager Torey Lovullo has emphasized that continuity in the pitching staff is a priority. Bringing back familiar faces like Kelly can help maintain stability while integrating new additions, creating a rotation that is both seasoned and competitive.

3. Looking Ahead to 2026

The 2026 season promises to be another test in the NL West, a division that consistently features powerhouse teams. Arizona’s signing of Kelly underscores their commitment to contending and building a rotation capable of facing tough divisional opponents multiple times throughout the season. Kelly’s ability to handle innings and manage high-pressure games makes him an essential piece for both regular season and potential playoff scenarios. His return could provide the team with a reliable ace to anchor the rotation and guide younger pitchers through challenging stretches. While the Diamondbacks are bolstering their pitching, they will also need to monitor other roster needs, including infield depth and offensive production. Strategic decisions in these areas, combined with the Kelly acquisition, will define the team’s trajectory in 2026. Arizona’s approach appears measured but aggressive, blending experienced veterans with emerging talent. If Kelly regains his form and the rotation stays healthy, the Diamondbacks could position themselves as serious contenders for a return to October baseball.