Matt Krook#20

Rochester Red Wings·BBRef

RSFree agentFLBFree agent

Pos: Pitcher

B/T: L / L

Born: Oct 21, 1994 (31)

Height: 6' 4"

Weight: 225 lbs

Owned: 0.0%

From: Hillsborough, CA

Drafted: 2016

Matt Krook

#20

Rochester Red Wings BBRef

RSFree agentFLBFree agent

Position: Pitcher

Bats/Throws: L / L

Born: Oct 21, 1994 (31)

Height: 6' 4"

Weight: 225 lbs

Owned: 0.00%

From: Hillsborough, CA

Drafted:

G	GS	IP	W-L	ERA	WHIP	K	BB	SV	K/9	K/BB	FIP
5	0	3.2	0-0	14.73	2.45	5	4	0	14.1	1.25	8.38

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

Jul 29Rotowire

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.

The Nationals designated Krook for assignment Monday.

Jul 27Rotowire

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.

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

Jul 19Rotowire

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.

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

Jul 14Rotowire

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

The Nationals designated Krook for assignment Sunday.

Jul 12Rotowire

Krook will be pushed off the 40-man roster after the Nationals recalled first baseman Abimelec Ortiz from 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.

2026

Poor

Below Avg

Average

Above Avg

Elite

xERA

7.82

xBA

.293

Fastball Velo

89.4 mph

Avg Exit Velo

87.5 mph

Chase %

27.5%

Whiff %

25.7%

K %

19.6%

BB %

21.7%

Barrel %

4.0%

Hard-Hit %

36.0%

Year by Year

Year	G	GS	W	L	SV	IP	H	HR	BB	K	ERA	WHIP
2023NYY	4	0	0	0	0	4.0	8	1	6	3	24.75	3.50
2024BAL	1	0	0	0	0	1.0	1	1	1	2	18.00	2.00
2025ATH	3	0	0	0	0	3.1	5	0	1	3	5.40	1.80
2026TOT ▼	11	0	0	1	0	8.1	9	2	10	9	10.80	2.28
Career	19	0	0	1	0	16.2	23	4	18	17	13.50	2.46
Year	G	GS	W	L	SV	IP	H	HR	BB	K	ERA	WHIP

Batting Splits

Splits

Season:

vs Batters: Left-Handed

LHP

2.1

OPS

1.142

WHIP

1.71

AVG

.222

vs Batters: Right-Handed

RHP

2.1

OPS

.722