Right-hander Erik Swanson announced his retirement yesterday on his personal Instagram account. Swanson, 32, pitched in parts of seven MLB seasons with the Blue Jays and Mariners.
The 32-year-old was an eighth-round pick by the Rangers back in 2014 and was a piece of two significant trades before he made his MLB debut. He was part of the package that Texas sent to the Yankees in exchange for the services of Carlos Beltran prior to the 2016 season, and then he was shipped to Seattle by the Yanks in the deal for James Paxton prior to the 2019 season. After pitching out of the bullpen in the Rangers’ system and starting during his time with the Yankees, Swanson made his big league debut with the Mariners in 2019 as a swing man.
That start to his career was a rocky one, as the right-hander posted a lackluster 5.74 ERA in 58 innings of work during his rookie season. Those innings were split between eight starts and 19 relief outings, He was back in the bullpen for the shortened 2020 season, but made just nine appearances and was lit up to the tune of 12 runs (11 earned) in just 7 2/3 innings of work despite a decent 24.3% strikeout rate. The Mariners stuck with Swanson headed into the 2021 season, however, and their commitment quickly began to pay dividends.
Swanson enjoyed the first truly successful season of his big league career in 2021. Though he only pitched 35 1/3 innings total, he looked great in doing so with a 3.31 ERA and a 24.8% strikeout rate across 33 appearances. He built on that solid performance the following year and enjoyed a breakout 2022 campaign. With a 1.68 ERA, 1.84 FIP, and 2.19 SIERA in 53 2/3 innings of work to go along with a 34.0% strikeout rate, Swanson was on the shortlist for the very best relievers in baseball that year. Among all pitchers with at least 50 innings of work that year, Swanson ranked in the top 10 by measure of SIERA (10th), K-BB% (10th), xERA (10th), ERA (9th), and FIP (3rd).
After that dominant season, the Mariners capitalized on Swanson’s value and made him a key piece of the trade that brought Teoscar Hernandez to Seattle. After being shipped to Toronto and suiting up for the Blue Jays, Swanson was unable to recreate his elite 2022 campaign but still enjoyed a strong 2023 as a quality late-inning arm. He pitched a career-high 66 2/3 innings across 69 appearances and turned in an impressive 2.97 ERA, though his strikeout rate dropped to 28.6% and his peripherals took a similar step back.
Unfortunately, things came off the rails for Swanson from there. In 2024, he struggled to a 5.03 ERA and had issues with his command across 45 appearances, surrendering 11 home runs in just 39 1/3 innings while his strikeout rate tumbled to 22.0%. The Jays held onto Swanson this year in hopes of a bounce back, but he dealt with nerve issues throughout the spring and had his season debut delayed until the start of June due to forearm soreness. He surrendered nine runs in six appearances before the Jays pulled the plug after just two weeks. He was released in late June and did not pitch professionally between then and his retirement announcement.
In all, Swanson posted a career 4.20 ERA in 246 games as a big leaguer. He struck out 281 batters across 266 innings of work and finishes his career with an 11-16 record and ten career saves. We at MLB Trade Rumors congratulate Swanson on a fine playing career and wish him all the best in his post-playing endeavors.