Jake Diekman Announces Retirement

Jake Diekman announced his retirement in a lengthy social media post this evening. The longtime reliever appeared with nine major league teams during a career that spanned parts of 13 seasons. His announcement is worth a full read, as he went on to thank his former organizations, teammates, family, fans, representatives at Beverly Hills Sports Council and more.

Now 38, Diekman entered professional baseball as a 20-year-old back in 2007. The Phillies drafted the lanky lefty in the 30th round out of a Kansas junior college. He’d been committed to attend the University of Nebraska the following spring but elected to sign with the Phils. Diekman moved to the bullpen a couple seasons into his minor league career and received his first MLB call in May 2012.

Diekman made 191 appearances over three and a half seasons for the Phils. Philadelphia was rebuilding for most of that run, but he was part of a combined no-hitter in 2014 and tallied a cumulative 3.84 earned run average. The Rangers acquired him alongside Cole Hamels in a massive 2015 deadline deal.

While that was primarily the Hamels trade, Diekman was a significant part of the Texas bullpen for the next few years. He tallied 124 1/3 innings of 3.18 ERA ball over parts of four seasons as a Ranger. He appeared in the postseason in 2015 and ’16, firing six innings of one-run ball in his first October action during the former season.

Diekman was on the move at the 2018 deadline. Texas was headed to a 95-loss season and he was ticketed for free agency, making him an obvious trade candidate. The D-Backs picked him up for the stretch run, though he struggled during his brief stint in the desert. Diekman signed a one-year contract with the Royals during the winter. Kansas City flipped him to the A’s at the 2019 deadline, and he impressed the team enough to re-sign on a two-year deal the following offseason.

After three seasons in Oakland, Diekman firmly moved into journeyman territory for his final few seasons. He played for another four teams between 2022-24, concluding his big league run with 43 appearances for the Mets last year. The Nebraska native returned home on a contract with the independent Lincoln SaltDogs a few weeks ago, but he’s now decided to wrap up his playing days.

Diekman finishes with a 3.91 ERA in a little over 600 big league frames. He recorded 764 strikeouts, fanning almost 29% of opposing hitters throughout his career. He never had pristine command, but he reliably missed bats behind a fastball that got into the 97-98 MPH range at his peak. He recorded 187 holds, a mark topped only by Tony Watson and Adam Ottavino since his 2012 debut, and secured 19 saves in scattered closing opportunities. Baseball Reference calculates his career earnings north of $28MM. MLBTR congratulates Diekman on a strong career and sends our best wishes for his post-playing endeavors.