Adam Kloffenstein or Isaac Mattson

Baseball Stats Comparison

Stats
Projections
News & Notes
Schedule

Adam Kloffenstein or Isaac Mattson Player Statistics
	Isaac Mattson RP - PIT	Adam Kloffenstein SP,RP - NYY
2026 Stats


Games Played	38	‐

Games Started	0	‐

Innings Pitched	38.2	‐

Wins	0	‐

Losses	0	‐

Saves	0	‐

Blown Saves	2	‐

Holds	8	‐

Hits Allowed	44	‐

Earned Runs	23	‐

Home Runs Allowed	3	‐

Strikeouts	36	‐

Walks	18	‐

ERA	5.35	‐

WHIP	1.60	‐

Adam Kloffenstein or Isaac Mattson Player Projections
	Isaac Mattson RP - PIT	Adam Kloffenstein SP,RP - NYY
2026 Projections


Games Played	57	12

Games Started	0	1

Innings Pitched	60.8	17.5

Wins	3	0

Losses	3	0

Saves	2	0

Blown Saves	1	0

Holds	14	0

Hits Allowed	55	20

Earned Runs	30	1

Home Runs Allowed	7	4

Strikeouts	59	13

Walks	28	8

ERA	4.44	0.52

WHIP	1.35	1.58

Adam Kloffenstein or Isaac Mattson Player Notes
	Isaac Mattson RP - PIT	Adam Kloffenstein SP,RP - NYY
News
	The Pirates placed RHP Isaac Mattson on the 15-day injured list with hip inflammation. Ari Koslow Tue, Sep 8th	Adam Kloffenstein has signed a minor league deal with the New York Yankees. The deal also includes an invitation to New York's Spring Training. David Leisering Mon, Jan 5th
	The Pirates recalled RHP Isaac Mattson from Triple-A Indianapolis. Ari Koslow Fri, Sep 4th
	The Pirates optioned Isaac Mattson to Triple-A Indianapolis. Ari Koslow Tue, Aug 18th
	The Pirates recalled RHP Isaac Mattson from Triple-A Indianapolis. Ari Koslow Thu, Aug 13th
	The Pirates optioned RHP Isaac Mattson to Triple-A Indianapolis. Ari Koslow Sun, Aug 2nd
Notes
There are no recent notes for these players

Adam Kloffenstein or Isaac Mattson Player Schedules
Date	Opp	Opp Pitcher	VBR	Opp	Opp Pitcher	VBR
	Isaac Mattson RP - PIT			Adam Kloffenstein SP,RP - NYY
Wed, Mar 25th				@ SF	Logan Webb (8-9)
Fri, Mar 27th				@ SF	Robbie Ray (13-8)	#198
Sat, Mar 28th	@ NYM	David Peterson (9-8)	#61	@ SF	Tyler Mahle (7-10)	#71
Mon, Mar 30th	@ CIN	Chase Burns (15-3)		@ SEA	Luis Castillo (4-11)	#97
Tue, Mar 31st	@ CIN	Brandon Williamson (5-5)	#241	@ SEA	Logan Gilbert (12-11)	#8
Wed, Apr 1st	@ CIN	Andrew Abbott (6-11)	#149	@ SEA	George Kirby (9-11)	#33
Fri, Apr 3rd	vs BAL	Kyle Bradish (7-14)		vs MIA	Eury Perez (8-11)	#22
Sat, Apr 4th	vs BAL	Shane Baz (6-15)	#85	vs MIA	Max Meyer (9-1)
Sun, Apr 5th	vs BAL	Chris Bassitt (9-5)	#175	vs MIA	Pete Fairbanks
Tue, Apr 7th	vs SD	Nick Pivetta (3-2)	#17	vs ATH	Aaron Civale (6-8)	#219
Wed, Apr 8th	vs SD	Michael King (12-10)	#55	vs ATH	Luis Severino (2-6)
Thu, Apr 9th				vs ATH	Jeffrey Springs (4-14)	#267
Fri, Apr 10th	@ CHC	Shota Imanaga (11-10)	#49	@ TB	Steven Matz (6-6)	#201
Sat, Apr 11th	@ CHC	Edward Cabrera (5-5)	#126	@ TB	Nick Martinez (15-6)	#208
Sun, Apr 12th	@ CHC	Jameson Taillon (2-6)		@ TB	Drew Rasmussen (16-5)	#26
Mon, Apr 13th	vs WSH	Cade Cavalli (13-5)	#34	vs LAA	Yusei Kikuchi (1-7)	#57
Tue, Apr 14th	vs WSH	PJ Poulin (3-0)		vs LAA	Reid Detmers (7-8)	#16
Wed, Apr 15th	vs WSH	Jake Irvin (2-10)	#213	vs LAA	Jack Kochanowicz (2-5)
Thu, Apr 16th	vs WSH	Foster Griffin (15-6)	#54	vs LAA	Brent Suter (3-2)
Fri, Apr 17th	vs TB	Nick Martinez (15-6)	#208	vs KC	Michael Wacha (9-10)	#99
Sat, Apr 18th	vs TB	Drew Rasmussen (16-5)	#26	vs KC	Noah Cameron (9-8)	#91
Sun, Apr 19th	vs TB	Shane McClanahan (10-7)		vs KC	Cole Ragans (1-4)
Tue, Apr 21st	@ TEX	Kumar Rocker (6-11)	#84	@ BOS	Connelly Early (7-5)	#76
Wed, Apr 22nd	@ TEX	Jack Leiter (3-7)		@ BOS	Ranger Suarez (8-5)	#70
Thu, Apr 23rd	@ TEX	Jacob deGrom (11-11)	#12	@ BOS	Payton Tolle (9-6)	#30
Fri, Apr 24th	@ MIL	Brandon Woodruff (2-2)		@ HOU	Lance McCullers Jr. (2-3)
Sat, Apr 25th	@ MIL	Jacob Misiorowski (16-5)	#7	@ HOU	Mike Burrows (4-9)
Sun, Apr 26th	@ MIL	Kyle Harrison (11-5)	#62	@ HOU	Spencer Arrighetti (9-9)	#181
Mon, Apr 27th	vs STL	Dustin May (7-9)	#35	@ TEX	Jack Leiter (3-7)
Tue, Apr 28th	vs STL	Kyle Leahy (10-5)	#79	@ TEX	Jacob deGrom (11-11)	#12
Wed, Apr 29th	vs STL	Andre Pallante (12-9)	#87	@ TEX	Nathan Eovaldi (11-10)	#66
Fri, May 1st	vs CIN	Brady Singer (6-15)	#221	vs BAL	Cade Povich (2-1)	#173
Sat, May 2nd	vs CIN	Rhett Lowder (7-12)	#200	vs BAL	Kyle Bradish (7-14)
Sun, May 3rd	vs CIN	Chase Burns (15-3)		vs BAL	Trey Gibson (2-3)	#249
Mon, May 4th				vs BAL	Shane Baz (6-15)	#85
Tue, May 5th	@ ARI	Eduardo Rodriguez (16-7)	#191	vs TEX	Jacob deGrom (11-11)	#12
Wed, May 6th	@ ARI	Michael Soroka (9-5)	#48	vs TEX	Nathan Eovaldi (11-10)	#66
Thu, May 7th	@ ARI	Zac Gallen (3-9)	#216	vs TEX	MacKenzie Gore (8-11)	#39
Fri, May 8th	@ SF	Robbie Ray (13-8)	#198	@ MIL	Jacob Misiorowski (16-5)	#7
Sat, May 9th	@ SF	Landen Roupp (9-14)		@ MIL	Kyle Harrison (11-5)	#62
Sun, May 10th	@ SF	Tyler Mahle (7-10)	#71	@ MIL	Logan Henderson (11-3)	#11
Mon, May 11th				@ BAL	Brandon Young (9-6)	#168
Tue, May 12th	vs COL	Michael Lorenzen (3-13)		@ BAL	Trevor Rogers (10-11)	#42
Wed, May 13th	vs COL	Jose Quintana (2-3)	#281	@ BAL	Kyle Bradish (7-14)
Fri, May 15th	vs PHI	Aaron Nola (7-12)	#68	@ NYM	Clay Holmes (6-8)	#83
Sat, May 16th	vs PHI	Cristopher Sanchez (18-7)	#6	@ NYM	Huascar Brazoban (6-2)	#229
Sun, May 17th	vs PHI	Zack Wheeler (14-5)	#5	@ NYM	Freddy Peralta (10-11)	#51
Mon, May 18th				vs TOR	Patrick Corbin (3-4)
Tue, May 19th	@ STL	Matthew Liberatore (6-14)	#95	vs TOR	Dylan Cease (11-6)
Wed, May 20th	@ STL	Michael McGreevy (7-9)	#109	vs TOR	Trey Yesavage (5-6)	#24
Thu, May 21st	@ STL	Dustin May (7-9)	#35	vs TOR	Braydon Fisher (3-4)	#158
Fri, May 22nd	@ TOR	Kevin Gausman (9-12)	#36	vs TB	Nick Martinez (15-6)	#208
Sun, May 24th	@ TOR	Dylan Cease (11-6)		vs TB	Drew Rasmussen (16-5)	#26
Mon, May 25th	vs CHC	Ben Brown (4-2)		@ KC	Michael Wacha (9-10)	#99
Tue, May 26th	vs CHC	Jordan Wicks (0-2)		@ KC	Bailey Falter (0-2)
Wed, May 27th	vs CHC	Jameson Taillon (2-6)		@ KC	Noah Cameron (9-8)	#91
Fri, May 29th	vs MIN	Taj Bradley (12-6)	#44	@ ATH	Luis Severino (2-6)
Sat, May 30th	vs MIN	Bailey Ober (7-7)	#155	@ ATH	J.T. Ginn (9-8)
Sun, May 31st	vs MIN	Zebby Matthews (9-11)	#134	@ ATH	Jacob Lopez (7-5)	#251
Tue, Jun 2nd	@ HOU	Mike Burrows (4-9)		vs CLE	Joey Cantillo (11-9)	#63
Wed, Jun 3rd	@ HOU	Spencer Arrighetti (9-9)	#181	vs CLE	Gavin Williams (14-8)	#20
Thu, Jun 4th	@ HOU	Kai-Wei Teng (5-7)	#220	vs CLE	Slade Cecconi (5-7)	#164
Fri, Jun 5th	@ ATL	Martin Perez (9-9)	#82	vs BOS	Sonny Gray (18-5)	#45
Sun, Jun 7th	@ ATL	Bryce Elder (8-8)		vs BOS	Ranger Suarez (8-5)	#70
Mon, Jun 8th				@ CLE	Gavin Williams (14-8)	#20
Tue, Jun 9th	vs LAD	Eric Lauer (8-7)		@ CLE	Slade Cecconi (5-7)	#164
Wed, Jun 10th	vs LAD	Shohei Ohtani (8-2)	#1	@ CLE	Parker Messick (12-9)	#29
Fri, Jun 12th	vs MIA	Sandy Alcantara (13-11)	#77	@ TOR	Trey Yesavage (5-6)	#24
Sat, Jun 13th	vs MIA	Lake Bachar (2-4)	#156	@ TOR	Kevin Gausman (9-12)	#36
Sun, Jun 14th	vs MIA	Max Meyer (9-1)		@ TOR	Patrick Corbin (3-4)
Tue, Jun 16th	@ ATH	Jack Perkins (3-13)	#171	vs CWS	Davis Martin (9-8)	#73
Wed, Jun 17th	@ ATH	Aaron Civale (6-8)	#219	vs CWS	Anthony Kay (10-9)	#121
Thu, Jun 18th				vs CWS	Bryan Hudson (5-4)	#141
Fri, Jun 19th	@ COL	Kyle Freeland (4-12)	#187	vs CIN	Rhett Lowder (7-12)	#200
Sat, Jun 20th	@ COL	Tomoyuki Sugano (12-12)	#263	vs CIN	Andrew Abbott (6-11)	#149
Sun, Jun 21st	@ COL	Michael Lorenzen (3-13)		vs CIN	Chase Burns (15-3)
Mon, Jun 22nd				@ DET	Framber Valdez (10-12)	#53
Tue, Jun 23rd	vs SEA	George Kirby (9-11)	#33	@ DET	Casey Mize (6-10)	#47
Wed, Jun 24th	vs SEA	Bryan Woo (12-10)	#13	@ DET	Tarik Skubal (12-7)	#2
Thu, Jun 25th	vs SEA	Bryce Miller (4-10)	#31	@ BOS	Connelly Early (7-5)	#76
Fri, Jun 26th	vs CIN	Andrew Abbott (6-11)	#149	@ BOS	Payton Tolle (9-6)	#30
Sat, Jun 27th	vs CIN	Chase Burns (15-3)		@ BOS	Jake Bennett (9-7)	#210
Sun, Jun 28th	vs CIN	Brady Singer (6-15)	#221	@ BOS	Sonny Gray (18-5)	#45
Mon, Jun 29th	@ PHI	Aaron Nola (7-12)	#68	vs DET	Casey Mize (6-10)	#47
Tue, Jun 30th	@ PHI	Cristopher Sanchez (18-7)	#6	vs DET	Tarik Skubal (12-7)	#2
Wed, Jul 1st	@ PHI	Zack Wheeler (14-5)	#5	vs DET	Troy Melton (8-5)
Fri, Jul 3rd	@ WSH	Foster Griffin (15-6)	#54	vs MIN	Mike Paredes (0-3)
Sat, Jul 4th	@ WSH	Carson Palmquist (0-2)		vs MIN	Zebby Matthews (9-11)	#134
Sun, Jul 5th	@ WSH	Cade Cavalli (13-5)	#34	vs MIN	Joe Ryan (7-10)	#25
Mon, Jul 6th				@ TB	Griffin Jax (8-10)	#67
Tue, Jul 7th	vs ATL	Hurston Waldrep (0-1)		@ TB	Ian Seymour (9-7)	#60
Wed, Jul 8th	vs ATL	Grant Holmes (10-6)	#193	@ TB	Shane McClanahan (10-7)
Thu, Jul 9th	vs ATL	Bryce Elder (8-8)		@ TB	Drew Rasmussen (16-5)	#26
Fri, Jul 10th				@ WSH	Carson Palmquist (0-2)
Sat, Jul 11th	vs MIL	Shane Drohan (7-5)	#128	@ WSH	PJ Poulin (3-0)
Sun, Jul 12th	vs MIL	Robert Gasser (5-5)	#43	@ WSH	Cade Cavalli (13-5)	#34
Fri, Jul 17th				vs LAD	Roki Sasaki (5-5)	#102
Sun, Jul 19th	@ CLE	Joey Cantillo (11-9)	#63	vs LAD	Will Klein (3-4)
Mon, Jul 20th	@ NYY	Ryan Weathers (5-8)		vs PIT	Braxton Ashcraft (14-6)
Wed, Jul 22nd	@ NYY	Max Fried (5-5)	#21	vs PIT	Bubba Chandler (8-10)	#59
Fri, Jul 24th	vs CHC	Matthew Boyd (10-5)	#78	@ PHI	Jesus Luzardo (14-5)
Sat, Jul 25th	vs CHC	Shota Imanaga (11-10)	#49	@ PHI	Tim Mayza (3-4)	#131
Sun, Jul 26th	vs CHC	Jameson Taillon (2-6)		@ PHI	Cristopher Sanchez (18-7)	#6
Mon, Jul 27th	vs ARI	Merrill Kelly (10-14)	#146	@ CWS	Noah Schultz (4-9)	#154
Tue, Jul 28th	vs ARI	Brandon Pfaadt (8-3)	#130	@ CWS	Anthony Kay (10-9)	#121
Wed, Jul 29th	vs ARI	Eduardo Rodriguez (16-7)	#191	@ CWS	Davis Martin (9-8)	#73
Thu, Jul 30th	@ CIN	Rhett Lowder (7-12)	#200	@ CWS	Sean Burke (11-7)	#58
Fri, Jul 31st	@ CIN	Hunter Greene (2-2)		@ CHC	Shota Imanaga (11-10)	#49
Sat, Aug 1st	@ CIN	Andrew Abbott (6-11)	#149	@ CHC	David Peterson (9-8)	#61
Sun, Aug 2nd	@ CIN	Chase Burns (15-3)		@ CHC	Colin Rea (8-8)	#262
Mon, Aug 3rd	@ MIL	Brandon Sproat (3-7)		vs STL	Michael McGreevy (7-9)	#109
Tue, Aug 4th	@ MIL	Logan Henderson (11-3)	#11	vs STL	Hunter Dobbins (3-3)
Wed, Aug 5th	@ MIL	Kyle Harrison (11-5)	#62	vs STL	Andre Pallante (12-9)	#87
Fri, Aug 7th	vs NYM	Zac Thornton (5-6)	#122	vs ATL	Tyler Mahle (7-10)	#71
Sat, Aug 8th	vs NYM	Robert Stock (1-3)		vs ATL	Chris Sale (14-9)	#3
Sun, Aug 9th	vs NYM	Sean Manaea (6-8)	#46	vs ATL	Grant Holmes (10-6)	#193
Tue, Aug 11th	@ MIA	Eury Perez (8-11)	#22	vs SEA	Bryan Woo (12-10)	#13
Wed, Aug 12th	@ MIA	Janson Junk (6-9)	#138	vs SEA	Bryce Miller (4-10)	#31
Thu, Aug 13th	@ MIA	Tyler Phillips (5-6)	#247	vs SEA	Logan Gilbert (12-11)	#8
Fri, Aug 14th	vs BOS	Jake Bennett (9-7)	#210	@ TOR	Shane Bieber (5-2)
Sat, Aug 15th	vs BOS	Sonny Gray (18-5)	#45	@ TOR	Braydon Fisher (3-4)	#158
Sun, Aug 16th	vs BOS	Patrick Sandoval (1-7)	#92	@ TOR	Dylan Cease (11-6)
Tue, Aug 18th	vs DET	Keider Montero (10-9)	#188	@ BAL	Shane Baz (6-15)	#85
Wed, Aug 19th	vs DET	Jackson Jobe (3-3)	#115	@ BAL	Chris Bassitt (9-5)	#175
Thu, Aug 20th				@ BAL	Kyle Bradish (7-14)
Fri, Aug 21st	@ LAD	Yoshinobu Yamamoto (14-9)	#4	vs TOR	Mason Fluharty (7-1)	#117
Sat, Aug 22nd	@ LAD	Tarik Skubal (12-7)	#2	vs TOR	Dylan Cease (11-6)
Sun, Aug 23rd	@ LAD	Blake Snell (4-1)	#15	vs TOR	Jose Soriano (12-8)	#23
Tue, Aug 25th	@ SD	Michael King (12-10)	#55	vs HOU	Ethan Pecko (2-0)	#148
Wed, Aug 26th	@ SD	Randy Vasquez (10-6)	#245	vs HOU	Peter Lambert (8-10)	#185
Thu, Aug 27th				vs HOU	Hayden Wesneski (6-2)	#100
Fri, Aug 28th	@ STL	Quinn Mathews (2-4)	#101	vs BOS	Patrick Sandoval (1-7)	#92
Sat, Aug 29th	@ STL	Kyle Leahy (10-5)	#79	vs BOS	Alec Gamboa (1-0)	#226
Sun, Aug 30th	@ STL	Matthew Liberatore (6-14)	#95	vs BOS	Ranger Suarez (8-5)	#70
Mon, Aug 31st				@ LAA	Walbert Urena (9-11)	#40
Tue, Sep 1st	vs SF	Logan Webb (8-9)		@ LAA	Grayson Rodriguez (5-8)	#64
Wed, Sep 2nd	vs SF	Landen Roupp (9-14)		@ LAA	Reid Detmers (7-8)	#16
Fri, Sep 4th	vs LAA	Ryan Johnson (5-9)	#170	@ SD	Walker Buehler (9-6)	#90
Sat, Sep 5th	vs LAA	Yusei Kikuchi (1-7)	#57	@ SD	Robbie Ray (13-8)	#198
Sun, Sep 6th	vs LAA	Walbert Urena (9-11)	#40	@ SD	Michael King (12-10)	#55
Tue, Sep 8th	@ CWS	Sean Burke (11-7)	#58	vs COL	Gabriel Hughes (0-8)
Wed, Sep 9th	@ CWS	Davis Martin (9-8)	#73	vs COL	Tomoyuki Sugano (12-12)	#263
Thu, Sep 10th	@ CWS	Hagen Smith (3-3)	#120	vs COL	Ryan Feltner (7-10)	#230
Fri, Sep 11th	@ CHC	Shota Imanaga (11-10)	#49	vs NYM	Nolan McLean (12-10)	#28
Sat, Sep 12th	@ CHC	Clay Holmes (6-8)	#83	vs NYM	Zac Thornton (5-6)	#122
Sun, Sep 13th	@ CHC	Matthew Boyd (10-5)	#78	vs NYM	Christian Scott (4-5)
Mon, Sep 14th				@ MIN	Dean Kremer (5-5)	#81
Tue, Sep 15th	vs MIL	Jacob Misiorowski (16-5)	#7	@ MIN	Bailey Ober (7-7)	#155
Wed, Sep 16th	vs MIL	Logan Henderson (11-3)	#11	@ MIN	Zebby Matthews (9-11)	#134
Fri, Sep 18th	vs KC	Randy Dobnak (3-5)	#254	@ ARI	Eduardo Rodriguez (16-7)	#191
Sat, Sep 19th	vs KC	Noah Cameron (9-8)	#91	@ ARI	Brandon Pfaadt (8-3)	#130
Sun, Sep 20th	vs KC	Michael Wacha (9-10)	#99	@ ARI	Corbin Burnes (0-0)	#41
Tue, Sep 22nd	vs STL	Andre Pallante (12-9)	#87	vs TB	Drew Rasmussen (16-5)	#26
Wed, Sep 23rd	vs STL	Matthew Liberatore (6-14)	#95	vs TB	Mason Englert (0-4)	#167
Thu, Sep 24th	vs STL	Kyle Leahy (10-5)	#79	vs TB	Ian Seymour (9-7)	#60
Fri, Sep 25th	@ DET	Jackson Jobe (3-3)	#115	vs BAL	Brandon Young (9-6)	#168
Thu, Mar 26th	@ NYM	Freddy Peralta (10-11)	#51
Sun, Mar 29th	@ NYM	Nolan McLean (12-10)	#28
Mon, Apr 6th	vs SD	German Marquez (4-2)
Thu, Apr 30th	vs STL	Hunter Dobbins (3-3)
Thu, May 14th	vs COL	Chase Dollander (3-3)
Sat, May 23rd	@ TOR	Patrick Corbin (3-4)
Thu, May 28th	vs CHC	Colin Rea (8-8)	#262
Sat, Jun 6th	@ ATL	Spencer Strider (4-2)
Thu, Jun 11th	vs LAD	Justin Wrobleski (12-5)	#50
Mon, Jun 15th	@ ATH	J.T. Ginn (9-8)
Thu, Jul 2nd	@ PHI	Alan Rangel (0-3)
Sat, Jul 18th	@ CLE	Logan Allen (0-0)	#206
Thu, Aug 6th	@ MIL	Dustin May (7-9)	#35
Mon, Aug 17th	vs DET	Framber Valdez (10-12)	#53
Mon, Aug 24th	@ SD	Robbie Ray (13-8)	#198
Thu, Sep 3rd	vs SF	Blade Tidwell (1-2)
Thu, Sep 17th	vs MIL	Kyle Harrison (11-5)	#62
Sat, Sep 26th	@ DET	Justin Verlander (0-1)	#129
Sun, Sep 27th	@ DET	River Ryan (0-1)	#75