Matt Krook - MLB News, Rumors, & Updates

Elects free agency Krook elected to enter free agency Wednesday after declining his outright assignment from the Nationals to Triple-A Rochester.

Impact Krook was DFA'd by the Nationals on Monday, and rather than remain in the organization, the veteran southpaw will have the opportunity to explore his options. He's appeared in 11 major-league games between the Nationals and Athletics this season, allowing 11 runs (10 earned) on nine hits and 10 walks while striking out nine across 9.1 innings.

JULY 29 • ROTOWIRE

Booted from 40-man roster The Nationals designated Krook for assignment Monday.

Impact Krook walked all three batters he faced and was charged with two runs in Sunday's win over the Diamondbacks, and he finds himself off the 26-man and 40-man rosters a day later. Paxton Schultz will absorb Krook's spot on the roster and in the bullpen.

JULY 27 • ROTOWIRE

Back with Washington The Nationals re-signed Krook to a major-league contract prior to Sunday's game against the Athletics.

Impact Krook had elected free agency after rejecting an outright assignment to Triple-A Rochester when Washington removed him from its 40-man roster a week ago, but he quickly ended up returning to the Nationals on a new deal. The 31-year-old will give Washington another left-handed option in its bullpen after PJ Poulin (forearm) was placed on the 15-day injured list Sunday.

JULY 19 • ROTOWIRE

Nationals Reveal Tough Injury News About PJ Poulin as They Re-Sign Matt Krook Coming off a roller coaster of two games that took place on Friday and Saturday, the Washington Nationals are looking to win their series ov...

JULY 19 • SI.COM

Nationals Trade Former Top Prospect to Pirates for Lackluster Return It has not been a quiet All-Star break for the Washington Nationals. It was revealed that left-handed pitcher Matt Krook opted to become a f...

JULY 16 • SI.COM

Nationals Place Drew Millas on Injured List, Reinstate High-Upside Reliever Things are happening for the Washington Nationals during the All-Star break. First, it was revealed that left-handed pitcher Matt Krook opte...

JULY 15 • SI.COM

Elects free agency The Nationals outrighted Krook to Triple-A Rochester on Tuesday, but he rejected that assignment and declared free agency.

Impact The 31-year-old was designated for assignment by the Nationals over the weekend, and he'll hit the open market after passing through waivers unclaimed. In eight appearances between Atlanta and Washington this season, Krook has surrendered nine earned runs with a 7:6 K:BB across 6.1 innings.

JULY 14 • ROTOWIRE

Dropped from 40-man roster The Nationals designated Krook for assignment Sunday.

Impact Krook will be pushed off the 40-man roster after the Nationals recalled first baseman/designated hitter Abimelec Ortiz for Triple-A Rochester in a corresponding move. The lefty reliever has struggled over eight appearances in the big leagues this season between the Athletics and Nationals, pitching to a 12.79 ERA, 2.37 WHIP and 7:6 K:BB in 6.1 innings.

JULY 12 • ROTOWIRE

Chisholm's homer keys 3-run 9th as the Yankees rally past Washington 5-3

Jazz Chisholm Jr. hit a two-run homer in the ninth inning to lift the New York Yankees over the Washington Nationals 5-3

JULY 11 • Associated Press

Lands with Nats Washington claimed Krook off outright waivers from the Athletics on Saturday.

Impact Krook struggled during his time with the A's before being DFA'd on Friday, allowing seven earned runs with a 5:4 K:BB over 3.2 innings spanning five appearances. However, the Nationals will look to help him get back on track and in order to utilize him as a lefty option out of the bullpen. To clear room for Krook, Washington designated righty hurler Andre Granillo for assignment and optioned right-hander Zak Kent to Triple-A Rochester.

JULY 4 • ROTOWIRE

DFA'd by Athletics The Athletics designated Krook for assignment Thursday.

Impact Krook was roughed up for seven runs with a 5:4 K:BB over 3.2 innings during his brief time with the big club. The lefty has been outrighted previously, so he could elect free agency if he passes through waivers.

JULY 3 • ROTOWIRE

Gets call to big leagues The Athletics selected Krook's contract from Triple-A Las Vegas on Sunday.

Impact The left-hander re-signed with the A's on a minor-league deal in November and failed to make the Opening Day roster, but he'll now get a chance in the majors after posting a 3.72 ERA, 1.41 WHIP and 42:16 K:BB across 29 relief innings for Las Vegas. Krook has eight big-league appearances under his belt and has struggled in that limited sample size, giving up 15 earned runs with an 8:8 K:BB.

JUNE 21 • ROTOWIRE

Falls short in bid for roster The Athletics reassigned Krook to minor-league camp Monday.

Impact Krook was one of 11 players sent out in the Athletics' latest round of roster cuts. The 31-year-old left-hander spent most of the 2025 season at the Triple-A level but made three appearances in the majors with the Athletics, giving up two earned runs on five hits and one walk over 3.1 innings.

MARCH 16 • ROTOWIRE

Signs on with A's Krook agreed to a minor-league contract with the Athletics on Saturday.

Impact Krook elected free agency earlier in the month after being sent outright to Cleveland's Triple-A affiliate, and he's since decided to return to the A's. He made three appearances for the Athletics during the 2025 season, surrendering two runs on five hits and one walk while striking out three over 3.1 innings.

NOVEMBER 25, 2025 • ROTOWIRE

Headed to free agency The Guardians outrighted Krook to Triple-A Columbus, and he elected free agency Thursday, Tim Stebbins of MLB.com reports.

Impact Krook's only big-league appearances came with the A's, but he spent the final four months of the season in the Guardians' organization. He'll likely find a minor-league deal around the league this winter.

NOVEMBER 7, 2025 • ROTOWIRE

Claimed by Guardians The Guardians claimed Krook off waivers from the Athletics on Thursday and optioned him to Triple-A Columbus, Tim Stebbins of MLB.com reports.

Impact Krook was pushed off the Athletics' 40-man roster Tuesday after allowing two runs in 3.1 innings. He owns a 3.21 ERA in 14 Triple-A frames this season, however, and he'll now attempt to work his way back into the big leagues with Cleveland. Ben Lively (elbow) was transferred to the 60-day IL to make room for Krook on the 40-man.

MAY 29, 2025 • ROTOWIRE

Dumped from 40-man roster The Athletics designated Krook for assignment Tuesday.

Impact The left-hander was optioned to Triple-A Las Vegas on Thursday and has now lost his place on the 40-man roster. Krook will likely remain with Vegas if he passes through waivers unclaimed.

MAY 27, 2025 • ROTOWIRE

Red Sox trade left-hander Sean Newcomb to the Athletics for cash

The Boston Red Sox traded left-hander Sean Newcomb to the Athletics for an undisclosed amount of cash

MAY 27, 2025 • Associated Press

Optioned to Triple-A The Athletics optioned Krook to Triple-A Las Vegas on Thursday.

Impact Krook made three appearances during his short time with the big club, yielding two runs over 3.1 innings. Carlos Duran will take his spot on the roster and in the bullpen.

MAY 22, 2025 • ROTOWIRE

Returns to Triple-A The Athletics optioned Krook to Triple-A Las Vegas on Thursday.

Impact Krook made three appearances during his short time with the big club, yielding two runs over 3.1 innings. Carlos Duran was called up from Triple-A in a corresponding move and will take Krook's spot in the bullpen.

MAY 22, 2025 • ROTOWIRE

Selected from Vegas The Athletics selected Krook's contract from Triple-A Las Vegas on Friday.

Impact Krook signed a minor-league deal with the A's during the offseason and has since turned in a 3.21 ERA and 1.57 WHIP alongside a 21:8 K:BB across 14 innings in Triple-A. Searching for some answers in it's bullpen, the Athletics will give the 30-year-old southpaw another look in the bigs. However, with 13 earned runs allowed in just five career MLB innings, he'll almost certainly be limited to a low-leverage role.

MAY 16, 2025 • ROTOWIRE

Catches on with Athletics Krook signed a minor-league contract with the Athletics on Friday.

Impact Krook surrendered two earned runs in one inning during his lone MLB appearance with Baltimore last season. He was much more effective during his time with Triple-A Norfolk, however, posting a 3.92 ERA and 1.41 WHIP across 43.2 frames. Now with the A's, the 30-year-old southpaw will most likely fill in as organizational depth at Triple-A Las Vegas.

NOVEMBER 20, 2024 • ROTOWIRE

Outrighted to Triple-A The Orioles outrighted Krook to Triple-A Norfolk on Friday, Roch Kubatko of MASNSports.com reports.

Impact Krook was dropped from the 40-man roster earlier this week but will remain in the organization after passing through waivers unclaimed. He holds a 4.11 ERA and 1.43 WHIP with 41 strikeouts over 35 innings this season at Norfolk.

AUGUST 2, 2024 • ROTOWIRE

Dropped from 40-man roster Krook was designated for assignment by the Orioles on Tuesday, Rich Dubroff of BaltimoreBaseball.com reports.

Impact Krook has spent the majority of 2024 campaign with Triple-A Norfolk, where he'll likely remain if he clears waivers. The left-hander owns a 4.11 ERA and 1.43 WHIP with 41 strikeouts over 35 innings in 34 appearances out of Norfolk's bullpen this year. With the Orioles acquiring a handful of players during Tuesday's trade deadline, Krook appears to have been one of the odd men out on the 40-man roster.

JULY 31, 2024 • ROTOWIRE

Dropped from 40-man roster Krook was designated for assignment by the Orioles on Tuesday, Rich Dubroff of BaltimoreBaseball.com reports.

JULY 31, 2024 • ROTOWIRE

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