Rainey was optioned to Triple-A Fresno Monday, Jesse Dougherty of The Washington Post reports.
Rainey was acquired by the Nationals in exchange for Tanner Roark this offseason. Known as a hard-thrower who lacks control of his pitches, Rainey struggled this spring allowing seven earned runs and three walks in 4.2 innings of work.
Rainey allowed four runs on four hits and a walk over two-thirds of an inning during Tuesday's spring loss to the Cardinals.
Rainey was acquired from the Reds for Tanner Roark in December and his first unofficial outing in a Nationals uniform was forgettable. The hard-throwing right-hander has historically struggled with walks (6.2 BB/9 at Triple-A Louisville in 2018), but that was of no concern Tuesday as he fooled no one and threw 12 total pitches to the seven batters he faced.
Rainey made his major-league debut in 2018, though he struggled in his small sample, allowing 19 runs while posting a 7:12 K:BB in seven innings of relief. The 25-year-old fared much better in his first taste of Triple-A, notching a 2.65 ERA, 1.18 WHIP and 65:35 K:BB across 51 innings with Louisville. Rainey has the makings of a future high-leverage arm with a fastball that can touch triple digits, but he'll need to improve his control if he's to reach that ceiling.
Rainey was optioned to Triple-A Louisville on Friday.
Rainey made a pair of appearances during his latest stint with the Reds, giving up an incredible 10 runs in a total of just one inning. His season ERA now sits at 24.43 through seven innings. He's given much more reason for optimism at the Triple-A level, though, tossing 28.2 innings with a 1.57 ERA, but even there, his walk rate sits at an untenable 18.3 percent. Austin Brice was recalled in a corresponding move.
Cincinnati will bring up a pair of relievers in Rainey and Cody Reed from Triple-A to bolster the bullpen after long reliever Dylan Floro was traded to the Dodgers prior to Wednesday's game against the White Sox. Rainey has previously made six appearances for the Reds, surrendering nine runs on six hits and nine walks over six innings. Those poor numbers will likely force him to settle for a low-leverage relief role while he's up with the big club.
|5/26/2019 vs Miami|
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|2017||AA-Pensacola Blue Wahoo||1||1||1.59||14||0||0||0||4||17.0||8||4||3||2||2||11||27|