Isaac Mattson or Matt Krook

Baseball Stats Comparison

Stats
Projections
News & Notes
Schedule

Isaac Mattson or Matt Krook Player Statistics
	Isaac Mattson RP - PIT	Matt Krook RP - WSH
2026 Stats


Games Played	38	11

Games Started	0	0

Innings Pitched	38.2	8.1

Wins	0	0

Losses	0	1

Saves	0	0

Blown Saves	2	2

Holds	8	2

Hits Allowed	44	10

Earned Runs	23	11

Home Runs Allowed	3	2

Strikeouts	36	9

Walks	18	10

ERA	5.35	11.88

WHIP	1.60	2.40

Isaac Mattson or Matt Krook Player Projections
	Isaac Mattson RP - PIT	Matt Krook RP - WSH
2026 Projections


Games Played	57	11

Games Started	0	0

Innings Pitched	60.8	11.0

Wins	3	1

Losses	3	0

Saves	2	0

Blown Saves	1	0

Holds	14	0

Hits Allowed	55	13

Earned Runs	30	15

Home Runs Allowed	7	2

Strikeouts	59	11

Walks	28	8

ERA	4.44	12.11

WHIP	1.35	1.85

Isaac Mattson or Matt Krook Player Notes
	Isaac Mattson RP - PIT	Matt Krook RP - WSH
News
	The Pirates placed RHP Isaac Mattson on the 15-day injured list with hip inflammation. Ari Koslow Tue, Sep 8th	The Nationals re-signed LHP Matt Krook to a minor league contract. Ari Koslow Tue, Aug 4th
	The Pirates recalled RHP Isaac Mattson from Triple-A Indianapolis. Ari Koslow Fri, Sep 4th	Matt Krook has elected free agency. Ari Koslow Wed, Jul 29th
	The Pirates optioned Isaac Mattson to Triple-A Indianapolis. Ari Koslow Tue, Aug 18th	The Nationals designated Matt Krook for assignment. Ari Koslow Mon, Jul 27th
	The Pirates recalled RHP Isaac Mattson from Triple-A Indianapolis. Ari Koslow Thu, Aug 13th	The Nationals are expected to activate Matt Krook on Monday. Ari Koslow Mon, Jul 6th
	The Pirates optioned RHP Isaac Mattson to Triple-A Indianapolis. Ari Koslow Sun, Aug 2nd	The Nationals claimed Matt Krook off waivers from the Athletics. Ari Koslow Sat, Jul 4th
Notes
There are no recent notes for these players

Isaac Mattson or Matt Krook Player Schedules
Date	Opp	Opp Pitcher	VBR	Opp	Opp Pitcher	VBR
	Isaac Mattson RP - PIT			Matt Krook RP - WSH
Thu, Mar 26th	@ NYM	Freddy Peralta (9-11)	#56	@ CHC	Matthew Boyd (9-5)	#50
Sat, Mar 28th	@ NYM	David Peterson (9-8)	#160	@ CHC	Cade Horton (1-0)
Sun, Mar 29th	@ NYM	Nolan McLean (12-10)	#16	@ CHC	Shota Imanaga (11-10)	#31
Mon, Mar 30th	@ CIN	Chase Burns (15-3)		@ PHI	Taijuan Walker (1-4)
Tue, Mar 31st	@ CIN	Brandon Williamson (5-4)	#292	@ PHI	Andrew Painter (3-10)	#164
Wed, Apr 1st	@ CIN	Andrew Abbott (6-11)	#131	@ PHI	Cristopher Sanchez (18-6)	#11
Fri, Apr 3rd	vs BAL	Kyle Bradish (7-14)		vs LAD	Emmet Sheehan (5-8)	#98
Sat, Apr 4th	vs BAL	Shane Baz (6-15)	#63	vs LAD	Tyler Glasnow (5-1)	#10
Sun, Apr 5th	vs BAL	Chris Bassitt (9-5)	#95	vs LAD	Roki Sasaki (5-5)	#183
Mon, Apr 6th	vs SD	German Marquez (4-2)		vs STL	Andre Pallante (12-8)	#94
Tue, Apr 7th	vs SD	Nick Pivetta (3-2)	#45	vs STL	Matthew Liberatore (6-14)	#90
Wed, Apr 8th	vs SD	Michael King (12-10)	#43	vs STL	Michael McGreevy (7-9)	#117
Fri, Apr 10th	@ CHC	Shota Imanaga (11-10)	#31	@ MIL	Aaron Ashby
Sat, Apr 11th	@ CHC	Edward Cabrera (5-5)	#197	@ MIL	Kyle Harrison (10-5)	#66
Sun, Apr 12th	@ CHC	Jameson Taillon (2-6)		@ MIL	Brandon Woodruff (2-2)
Mon, Apr 13th	vs WSH	Cade Cavalli (13-5)	#48	@ PIT	Paul Skenes (10-11)	#9
Tue, Apr 14th	vs WSH	PJ Poulin (3-0)		@ PIT	Mitch Keller (6-8)
Wed, Apr 15th	vs WSH	Jake Irvin (2-9)	#142	@ PIT	Mason Montgomery (6-3)	#132
Thu, Apr 16th	vs WSH	Foster Griffin (15-6)	#37	@ PIT	Braxton Ashcraft (14-6)
Fri, Apr 17th	vs TB	Nick Martinez (15-5)	#85	vs SF	Logan Webb (8-9)
Sat, Apr 18th	vs TB	Drew Rasmussen (16-5)	#18	vs SF	Adrian Houser (4-7)
Sun, Apr 19th	vs TB	Shane McClanahan (10-7)		vs SF	Robbie Ray (13-8)	#127
Tue, Apr 21st	@ TEX	Kumar Rocker (5-11)	#78	vs ATL	Reynaldo Lopez (4-5)
Wed, Apr 22nd	@ TEX	Jack Leiter (3-7)		vs ATL	Didier Fuentes (7-2)	#159
Thu, Apr 23rd	@ TEX	Jacob deGrom (11-10)	#5	vs ATL	JR Ritchie (1-4)	#157
Fri, Apr 24th	@ MIL	Brandon Woodruff (2-2)		@ CWS	Bryan Hudson (5-4)	#221
Sat, Apr 25th	@ MIL	Jacob Misiorowski (15-5)	#12	@ CWS	Noah Schultz (4-9)	#191
Sun, Apr 26th	@ MIL	Kyle Harrison (10-5)	#66	@ CWS	Bryan Hudson (5-4)	#221
Mon, Apr 27th	vs STL	Dustin May (7-9)	#42
Tue, Apr 28th	vs STL	Kyle Leahy (10-5)	#64	@ NYM	Clay Holmes (6-8)	#82
Wed, Apr 29th	vs STL	Andre Pallante (12-8)	#94	@ NYM	David Peterson (9-8)	#160
Thu, Apr 30th	vs STL	Hunter Dobbins (3-3)		@ NYM	Freddy Peralta (9-11)	#56
Fri, May 1st	vs CIN	Brady Singer (6-15)	#201	vs MIL	Jacob Misiorowski (15-5)	#12
Sat, May 2nd	vs CIN	Rhett Lowder (6-12)	#293	vs MIL	Kyle Harrison (10-5)	#66
Sun, May 3rd	vs CIN	Chase Burns (15-3)		vs MIL	Logan Henderson (11-3)	#28
Tue, May 5th	@ ARI	Eduardo Rodriguez (15-7)	#86	vs MIN	Taj Bradley (12-6)	#88
Wed, May 6th	@ ARI	Michael Soroka (9-5)	#49	vs MIN	Bailey Ober (7-6)	#110
Thu, May 7th	@ ARI	Zac Gallen (3-9)	#122	vs MIN	Simeon Woods Richardson (2-7)
Fri, May 8th	@ SF	Robbie Ray (13-8)	#127	@ MIA	Robby Snelling (0-1)
Sat, May 9th	@ SF	Landen Roupp (9-14)	#102	@ MIA	Janson Junk (6-9)	#77
Sun, May 10th	@ SF	Tyler Mahle (7-10)	#53	@ MIA	Sandy Alcantara (13-11)	#91
Tue, May 12th	vs COL	Michael Lorenzen (3-13)		@ CIN	Brady Singer (6-15)	#201
Wed, May 13th	vs COL	Jose Quintana (2-3)	#340	@ CIN	Nick Lodolo (3-6)	#153
Thu, May 14th	vs COL	Chase Dollander (3-3)		@ CIN	Chase Burns (15-3)
Fri, May 15th	vs PHI	Aaron Nola (7-11)	#52	vs BAL	Shane Baz (6-15)	#63
Sat, May 16th	vs PHI	Cristopher Sanchez (18-6)	#11	vs BAL	Chris Bassitt (9-5)	#95
Sun, May 17th	vs PHI	Zack Wheeler (13-5)	#7	vs BAL	Brandon Young (9-5)	#92
Tue, May 19th	@ STL	Matthew Liberatore (6-14)	#90	vs NYM	Nolan McLean (12-10)	#16
Wed, May 20th	@ STL	Michael McGreevy (7-9)	#117	vs NYM	Zac Thornton (5-5)	#144
Thu, May 21st	@ STL	Dustin May (7-9)	#42	vs NYM	David Peterson (9-8)	#160
Fri, May 22nd	@ TOR	Kevin Gausman (9-12)	#21	@ ATL	Bryce Elder (8-8)
Sat, May 23rd	@ TOR	Patrick Corbin (3-4)		@ ATL	Grant Holmes (10-5)	#148
Sun, May 24th	@ TOR	Dylan Cease (11-6)	#128	@ ATL	Martin Perez (9-9)	#119
Mon, May 25th	vs CHC	Ben Brown (4-2)		@ CLE	Tanner Bibee (6-15)	#71
Tue, May 26th	vs CHC	Jordan Wicks (0-2)		@ CLE	Joey Cantillo (10-9)	#58
Wed, May 27th	vs CHC	Jameson Taillon (2-6)		@ CLE	Gavin Williams (14-8)	#17
Thu, May 28th	vs CHC	Colin Rea (8-8)	#278
Fri, May 29th	vs MIN	Taj Bradley (12-6)	#88	vs SD	Lucas Giolito (2-3)
Sat, May 30th	vs MIN	Bailey Ober (7-6)	#110	vs SD	Michael King (12-10)	#43
Sun, May 31st	vs MIN	Zebby Matthews (9-11)	#140	vs SD	Griffin Canning (4-9)	#203
Tue, Jun 2nd	@ HOU	Mike Burrows (4-9)	#225	vs MIA	Lake Bachar (1-4)	#146
Wed, Jun 3rd	@ HOU	Spencer Arrighetti (9-9)	#254	vs MIA	Max Meyer (9-1)
Thu, Jun 4th	@ HOU	Kai-Wei Teng (5-7)	#167
Fri, Jun 5th	@ ATL	Martin Perez (9-9)	#119	@ ARI	Merrill Kelly (10-14)	#182
Sat, Jun 6th	@ ATL	Spencer Strider (4-2)		@ ARI	Eduardo Rodriguez (15-7)	#86
Sun, Jun 7th	@ ATL	Bryce Elder (8-8)		@ ARI	Michael Soroka (9-5)	#49
Tue, Jun 9th	vs LAD	Eric Lauer (8-7)		@ SF	Adrian Houser (4-7)
Wed, Jun 10th	vs LAD	Shohei Ohtani (8-2)	#8	@ SF	Robbie Ray (13-8)	#127
Thu, Jun 11th	vs LAD	Justin Wrobleski (12-5)	#51
Fri, Jun 12th	vs MIA	Sandy Alcantara (13-11)	#91	vs SEA	Bryce Miller (4-9)	#22
Sat, Jun 13th	vs MIA	Lake Bachar (1-4)	#146	vs SEA	Luis Castillo (4-11)	#161
Sun, Jun 14th	vs MIA	Max Meyer (9-1)		vs SEA	Emerson Hancock (7-8)	#174
Mon, Jun 15th	@ ATH	J.T. Ginn (9-8)		vs KC	Mitch Spence (0-2)
Tue, Jun 16th	@ ATH	Jack Perkins (3-12)	#126	vs KC	Michael Wacha (9-9)	#97
Wed, Jun 17th	@ ATH	Aaron Civale (6-7)	#152	vs KC	Luinder Avila (5-4)
Fri, Jun 19th	@ COL	Kyle Freeland (4-11)	#248	@ TB	Griffin Jax (8-10)	#40
Sat, Jun 20th	@ COL	Tomoyuki Sugano (12-11)	#336	@ TB	Ian Seymour (9-7)	#57
Sun, Jun 21st	@ COL	Michael Lorenzen (3-13)		@ TB	Nick Martinez (15-5)	#85
Tue, Jun 23rd	vs SEA	George Kirby (9-11)	#15	vs PHI	Jesus Luzardo (14-5)
Wed, Jun 24th	vs SEA	Bryan Woo (12-9)	#3	vs PHI	Aaron Nola (7-11)	#52
Thu, Jun 25th	vs SEA	Bryce Miller (4-9)	#22	vs PHI	Cristopher Sanchez (18-6)	#11
Fri, Jun 26th	vs CIN	Andrew Abbott (6-11)	#131	@ BAL	Trevor Rogers (10-11)	#39
Sat, Jun 27th	vs CIN	Chase Burns (15-3)		@ BAL	Brandon Young (9-5)	#92
Sun, Jun 28th	vs CIN	Brady Singer (6-15)	#201	@ BAL	Kyle Bradish (7-14)
Mon, Jun 29th	@ PHI	Aaron Nola (7-11)	#52	@ BOS	Ranger Suarez (8-4)	#44
Tue, Jun 30th	@ PHI	Cristopher Sanchez (18-6)	#11	@ BOS	Connelly Early (7-5)	#72
Wed, Jul 1st	@ PHI	Zack Wheeler (13-5)	#7	@ BOS	Payton Tolle (9-6)	#30
Thu, Jul 2nd	@ PHI	Alan Rangel (0-3)	#307
Fri, Jul 3rd	@ WSH	Foster Griffin (15-6)	#37	vs PIT	Mitch Keller (6-8)
Sat, Jul 4th	@ WSH	Carson Palmquist (0-2)		vs PIT	Braxton Ashcraft (14-6)
Sun, Jul 5th	@ WSH	Cade Cavalli (13-5)	#48	vs PIT	Bubba Chandler (8-9)	#75
Tue, Jul 7th	vs ATL	Hurston Waldrep (0-1)		vs HOU	Tatsuya Imai (6-4)	#179
Wed, Jul 8th	vs ATL	Grant Holmes (10-5)	#148	vs HOU	Spencer Arrighetti (9-9)	#254
Thu, Jul 9th	vs ATL	Bryce Elder (8-8)
Sat, Jul 11th	vs MIL	Shane Drohan (7-5)	#70	vs NYY	Cam Schlittler (14-6)	#14
Sun, Jul 12th	vs MIL	Robert Gasser (5-5)	#60	vs NYY	Will Warren (10-6)	#89
Sat, Jul 18th	@ CLE	Logan Allen (0-0)	#261	@ ATH	J.T. Ginn (9-8)
Sun, Jul 19th	@ CLE	Joey Cantillo (10-9)	#58	@ ATH	Jacob Lopez (6-5)	#267
Mon, Jul 20th	@ NYY	Ryan Weathers (5-8)	#171	@ COL	Kyle Freeland (4-11)	#248
Wed, Jul 22nd	@ NYY	Max Fried (5-5)	#13	@ COL	Gabriel Hughes (0-8)	#192
Fri, Jul 24th	vs CHC	Matthew Boyd (9-5)	#50	vs ARI	Eduardo Rodriguez (15-7)	#86
Sat, Jul 25th	vs CHC	Shota Imanaga (11-10)	#31	vs ARI	Mitch Bratt (1-3)
Sun, Jul 26th	vs CHC	Jameson Taillon (2-6)		vs ARI	Kohl Drake (0-1)	#257
Mon, Jul 27th	vs ARI	Merrill Kelly (10-14)	#182	vs TOR	Max Scherzer (3-9)	#147
Tue, Jul 28th	vs ARI	Brandon Pfaadt (7-3)	#112	vs TOR	Shane Bieber (5-2)
Wed, Jul 29th	vs ARI	Eduardo Rodriguez (15-7)	#86	vs TOR	Trey Yesavage (5-5)	#76
Thu, Jul 30th	@ CIN	Rhett Lowder (6-12)	#293	@ ATL	Grant Holmes (10-5)	#148
Fri, Jul 31st	@ CIN	Hunter Greene (2-2)		@ ATL	Bryce Elder (8-8)
Sat, Aug 1st	@ CIN	Andrew Abbott (6-11)	#131	@ ATL	Martin Perez (9-9)	#119
Sun, Aug 2nd	@ CIN	Chase Burns (15-3)		@ ATL	JR Ritchie (1-4)	#157
Mon, Aug 3rd	@ MIL	Brandon Sproat (3-7)	#317	@ PHI	Aaron Nola (7-11)	#52
Tue, Aug 4th	@ MIL	Logan Henderson (11-3)	#28	@ PHI	Jesus Luzardo (14-5)
Wed, Aug 5th	@ MIL	Kyle Harrison (10-5)	#66	@ PHI	Andrew Painter (3-10)	#164
Thu, Aug 6th	@ MIL	Dustin May (7-9)	#42	@ PHI	Cristopher Sanchez (18-6)	#11
Fri, Aug 7th	vs NYM	Zac Thornton (5-5)	#144	vs CIN	Chase Petty (1-2)	#309
Sat, Aug 8th	vs NYM	Robert Stock (1-3)		vs CIN	Chase Burns (15-3)
Sun, Aug 9th	vs NYM	Sean Manaea (6-7)	#54	vs CIN	Brady Singer (6-15)	#201
Tue, Aug 11th	@ MIA	Eury Perez (7-11)	#55	vs CHC	Shota Imanaga (11-10)	#31
Wed, Aug 12th	@ MIA	Janson Junk (6-9)	#77	vs CHC	David Peterson (9-8)	#160
Thu, Aug 13th	@ MIA	Tyler Phillips (5-6)	#136	vs CHC	Kevin Gausman (9-12)	#21
Fri, Aug 14th	vs BOS	Jake Bennett (9-7)	#103	@ NYM	Robert Stock (1-3)
Sat, Aug 15th	vs BOS	Sonny Gray (18-5)	#32	@ NYM	Sean Manaea (6-7)	#54
Sun, Aug 16th	vs BOS	Patrick Sandoval (1-7)	#80	@ NYM	Christian Scott (4-5)	#29
Mon, Aug 17th	vs DET	Framber Valdez (10-12)	#74
Tue, Aug 18th	vs DET	Keider Montero (10-9)	#107	@ TEX	Cal Quantrill (9-5)
Wed, Aug 19th	vs DET	Jackson Jobe (2-3)	#154	@ TEX	Kumar Rocker (5-11)	#78
Fri, Aug 21st	@ LAD	Yoshinobu Yamamoto (14-9)	#6	@ MIA	Ryan Gusto (1-5)	#106
Sat, Aug 22nd	@ LAD	Tarik Skubal (11-7)	#1	@ MIA	Eury Perez (7-11)	#55
Sun, Aug 23rd	@ LAD	Blake Snell (4-1)	#23	@ MIA	Janson Junk (6-9)	#77
Mon, Aug 24th	@ SD	Robbie Ray (13-8)	#127	vs COL	Ryan Feltner (6-10)	#342
Tue, Aug 25th	@ SD	Michael King (12-10)	#43	vs COL	Mason Adams (0-2)	#249
Wed, Aug 26th	@ SD	Randy Vasquez (10-6)	#280	vs COL	Tanner Gordon (1-5)	#287
Fri, Aug 28th	@ STL	Quinn Mathews (2-3)	#120	vs MIA	Eury Perez (7-11)	#55
Sat, Aug 29th	@ STL	Kyle Leahy (10-5)	#64	vs MIA	Sandy Alcantara (13-11)	#91
Sun, Aug 30th	@ STL	Matthew Liberatore (6-14)	#90	vs MIA	Janson Junk (6-9)	#77
Tue, Sep 1st	vs SF	Logan Webb (8-9)		vs ATL	AJ Smith-Shawver (0-2)	#134
Wed, Sep 2nd	vs SF	Landen Roupp (9-14)	#102	vs ATL	Grant Holmes (10-5)	#148
Thu, Sep 3rd	vs SF	Blade Tidwell (1-2)	#297
Fri, Sep 4th	vs LAA	Ryan Johnson (5-9)	#158	@ LAD	Blake Snell (4-1)	#23
Sat, Sep 5th	vs LAA	Yusei Kikuchi (1-6)	#79	@ LAD	Tyler Glasnow (5-1)	#10
Sun, Sep 6th	vs LAA	Walbert Urena (9-11)	#113	@ LAD	Justin Wrobleski (12-5)	#51
Tue, Sep 8th	@ CWS	Sean Burke (10-7)	#101	@ SD	Casey Mize (6-9)	#38
Wed, Sep 9th	@ CWS	Davis Martin (9-7)	#96	@ SD	Walker Buehler (9-6)	#139
Thu, Sep 10th	@ CWS	Hagen Smith (3-3)	#150
Fri, Sep 11th	@ CHC	Shota Imanaga (11-10)	#31	vs LAA	Yusei Kikuchi (1-6)	#79
Sat, Sep 12th	@ CHC	Clay Holmes (6-8)	#82	vs LAA	Walbert Urena (9-11)	#113
Sun, Sep 13th	@ CHC	Matthew Boyd (9-5)	#50	vs LAA	Grayson Rodriguez (4-8)	#123
Tue, Sep 15th	vs MIL	Jacob Misiorowski (15-5)	#12	vs PHI	Cristopher Sanchez (18-6)	#11
Wed, Sep 16th	vs MIL	Logan Henderson (11-3)	#28	vs PHI	Zack Wheeler (13-5)	#7
Thu, Sep 17th	vs MIL	Kyle Harrison (10-5)	#66
Fri, Sep 18th	vs KC	Randy Dobnak (3-4)	#334	@ STL	Kyle Leahy (10-5)	#64
Sat, Sep 19th	vs KC	Noah Cameron (9-8)	#81	@ STL	Michael McGreevy (7-9)	#117
Sun, Sep 20th	vs KC	Michael Wacha (9-9)	#97	@ STL	Quinn Mathews (2-3)	#120
Tue, Sep 22nd	vs STL	Andre Pallante (12-8)	#94	@ DET	Drew Anderson (5-7)	#62
Wed, Sep 23rd	vs STL	Matthew Liberatore (6-14)	#90	@ DET	Framber Valdez (10-12)	#74
Thu, Sep 24th	vs STL	Kyle Leahy (10-5)	#64
Fri, Sep 25th	@ DET	Jackson Jobe (2-3)	#154	vs NYM	Christian Scott (4-5)	#29
Sat, Sep 26th	@ DET	Justin Verlander (0-1)	#216	vs NYM	Jonah Tong (2-2)	#46
Sun, Sep 27th	@ DET	River Ryan (0-0)	#100	vs NYM	Sean Manaea (6-7)	#54
Mon, Apr 20th				vs ATL	Bryce Elder (8-8)
Mon, May 18th				vs NYM	Christian Scott (4-5)	#29
Mon, Jun 1st				vs MIA	Sandy Alcantara (13-11)	#91
Mon, Jun 8th				@ SF	Logan Webb (8-9)
Mon, Jun 22nd				vs PHI	Tim Mayza (3-4)	#229
Mon, Jul 6th				vs HOU	Mike Burrows (4-9)	#225
Fri, Jul 10th				vs NYY	Ryan Weathers (5-8)	#171
Fri, Jul 17th				@ ATH	Gage Jump (6-11)
Tue, Jul 21st				@ COL	Michael Lorenzen (3-13)
Thu, Aug 20th				@ TEX	Jacob deGrom (11-10)	#5
Thu, Aug 27th				vs COL	Gabriel Hughes (0-8)	#192
Mon, Aug 31st				vs MIA	Ryan Gusto (1-5)	#106
Mon, Sep 7th				@ SD	Nick Pivetta (3-2)	#45
Mon, Sep 21st				@ DET	River Ryan (0-0)	#100