The Kansas City Royals have made a strategic move by signing left-handed reliever Aaron Bummer to a minor league deal, and this decision is particularly intriguing given the team's current state of affairs. With a pitching staff riddled with injuries, the Royals are in a position where they need all the help they can get, and Bummer's addition could be a pivotal move. But what makes this deal even more interesting is the player's recent performance trends, which have been less than stellar.
Bummer, 32, has a solid career record, but his recent numbers have been concerning. From 2019 to 2025, he maintained an impressive 3.70 ERA across 328 innings, striking out batters at a 26.8% rate and keeping walks to a manageable 9.9%. However, last year, his ground ball rate dropped to 53.9%, a career-low, and his strikeout rate decreased to 21.7%, a significant dip from the previous year. This decline in performance coincided with a noticeable loss of velocity, with his four-seamer averaging 94.7 mph in 2023, but dropping to 91.7 mph in 2024 and further to 90.5 mph in 2026.
What's more, Bummer's struggles have continued into this season, with a 7.63 ERA in 19 appearances for the Atlanta Braves. His ground ball rate improved slightly, but his strikeout rate plummeted to 16.9%, and his four-seamer velocity continued to decline. It's no wonder that Atlanta released him in mid-May, and his subsequent minor league deal with the Chicago Cubs didn't last long either, as he opted out after four appearances.
So, why is the Royals' decision to sign Bummer significant? Well, for one, it provides them with an opportunity to assess his potential without taking on a significant financial risk. Bummer is making $9.5MM this year, but Atlanta is on the hook for that amount after releasing him, and if the Royals decide to call him up, they would only have to pay him the prorated league minimum for any time spent on the roster, with that amount subtracted from what Atlanta owes.
The Royals' pitching staff has been battered by injuries, with starters Cole Ragans, Kris Bubic, and Stephen Kolek on the injured list, and relievers Carlos Estévez, James McArthur, Nick Mears, and Connor Seabold also sidelined. This has put a strain on the bullpen, which currently has a collective 5.42 ERA, the worst in the MLB (excluding the Athletics). With the Royals in a seller's position, they might be looking to flip a few arms to other clubs, and Bummer could be a potential trade chip if he shows signs of life with the Omaha Storm Chasers.
What makes this situation particularly fascinating is the potential for Bummer to turn things around. While his recent performance has been concerning, the Royals are giving him a chance to prove himself, and if he can regain his form, it could be a significant boost for the team. However, if he continues to struggle, it might be a sign that the Royals should be cautious about calling him up, as it could be a costly mistake.
In my opinion, the Royals' decision to sign Bummer is a calculated move, and it's an interesting strategy given the team's current circumstances. It's a chance to assess a player's potential without a significant financial commitment, and if he can turn things around, it could be a game-changer for the team. But if he continues to struggle, it might be a sign that the Royals should be looking elsewhere for solutions to their pitching woes.
