Bailey Falter Designated for Assignment; Mason Black Recalled

[Kevin O'Brien]

 

On Wednesday morning, the Kansas City Royals announced that they had designated left-handed pitcher Bailey Falter for assignment and had recalled right-handed pitcher Mason Black from Omaha.

Falter had come over to the Royals at the Trade Deadline from Pittsburgh last season in exchange for lefty reliever Evan Sisk. In 2024, Falter posted a 4.43 ERA in 142.1 IP, and in 2025 with the Pirates, he posted a 3.73 ERA in 113.1 IP. However, he struggled in his move to Kansas City last year, posting an 11.25 ERA in four outings (two starts) and 12 IP before landing on the IL for the remainder of the year.

The struggles Falter experienced with the Royals in 2025 carried over into this season.

In five outings (two starts) and 9.2 IP, the 29-year-old posted a 13.97 ERA, 3.10 WHIP, and 9.10 WHIP. He also landed on the IL early in the year due to some elbow issues and looked better in his rehab outing in Omaha. Unfortunately, the results from Omaha didn't follow Falter to Kansas City.

As discussed in a post this morning, Falter showed an interesting TJ Stuff+ profile and extension on his pitches, but struggled to generate whiffs and CSWs this season at the Major League level.

Falter will likely declare for free agency if he clears waivers. It doesn't seem like he was happy with his role, flipping between starter and reliever, as evidenced by this quote from the Kansas City Star's Pete Grathoff.

 

Mason Black will replace Falter on the Royals' pitching staff. Black has made four appearances with the Royals this year. In that 4.2 IP sample, he has not allowed a run, has a 1.93 WHIP, 2.24 FIP, and 13.6% K-BB%. His profile is very similar to Falter's, albeit from the right, as seen below in his TJ Statcast Percentiles summary.

In 13 outings and 20.2 IP with Omaha this year, Black has a 6.53 ERA, 1.55 WHIP, and 4.3% K-BB%, which isn't impressive. However, his FIP is much better at 3.49, and he's done a much better job in Triple-A of throwing strikes (67% strike rate) and limiting the long ball (0.0% HR/FB rate). 

 

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