Right-hander Tanner Rainey has reunited with the Pirates on a minor league deal and will report to Triple-A Indianapolis, as relayed by Alex Stumpf of MLB.com. He was designated for assignment by the Bucs just over a week ago but had cleared waivers and elected free agency, according to his transactions tracker at MLB.com.
Rainey, 32, signed a minor league deal with the Pirates in the offseason. He was selected to their roster in early May and spent almost a month on the roster. In that time, he struggled mightily through 11 appearances where he surrendered nine runs on seven hits and six walks while striking out six across 7 2/3 innings of work. A look under the hood reveals that eight of those appearances were actually scoreless, as he allowed all nine runs across the other three outings while combining to record just two outs in those appearances.
Meltdowns like that are sure to balloon a pitcher’s ERA, but Rainey retained the peripherals of a perfectly decent middle reliever. He struck out 24.3% of his opponents, and while his 16.2% walk rate was definitely alarming his ability to keep the ball on the ground and miss barrels was enough to allow him to maintain a solid 3.46 FIP and a decent 4.32 SIERA. Those numbers would be a marked improvement over last year, when he pitched to a 4.76 ERA and 5.42 FIP in 51 frames for the Nationals while walking 12.6% of his opponents and striking out just 19.0%.
Of course, the Pirates were surely hoping to help Rainey discover the form he flashed earlier in his Nationals career when they initially signed him. From 2019 to 2023, Rainey posted a 4.39 ERA with a 4.54 FIP in his 140 appearances for the club. That includes one major outlier season, however, as 2021 saw him torched to the tune of a 7.39 ERA in 31 2/3 innings of work. Rainey’s ERA was under 4.00 in the other four years of that stretch, and he even got some high-leverage work in during the 2022 campaign when he collected 12 saves.
If Rainey can get right, it wouldn’t be a shock to see him get another opportunity for a beleaguered Pirates team that could certainly use some help in the bullpen. Their 4.22 ERA ranks 20th in baseball, and key pieces like Tim Mayza and Justin Lawrence are currently on the shelf. Dennis Santana, David Bednar, and Caleb Ferguson are a decent late-inning trio, but Pittsburgh could use more solid middle relief options than Ryan Borucki and Kyle Nicolas. Of course, Rainey will need to compete with other non-roster veterans like Yohan Ramirez and Ryder Ryan to capitalize on those opportunities.
Photo courtesy of Charles LeClaire, Imagn Images