Isaac Mattson or Shawn Armstrong

Baseball Stats Comparison

Stats
Projections
News & Notes
Schedule

Isaac Mattson or Shawn Armstrong Player Statistics
	Shawn Armstrong RP - CLE	Isaac Mattson RP - PIT
2026 Stats


Games Played	41	38

Games Started	0	0

Innings Pitched	35.1	38.2

Wins	2	0

Losses	1	0

Saves	0	0

Blown Saves	0	2

Holds	9	8

Hits Allowed	29	44

Earned Runs	18	23

Home Runs Allowed	4	3

Strikeouts	34	36

Walks	19	18

ERA	4.58	5.35

WHIP	1.36	1.60

Isaac Mattson or Shawn Armstrong Player Projections
	Shawn Armstrong RP - CLE	Isaac Mattson RP - PIT
2026 Projections


Games Played	64	57

Games Started	1	0

Innings Pitched	65.9	60.8

Wins	3	3

Losses	3	3

Saves	3	2

Blown Saves	1	1

Holds	15	14

Hits Allowed	58	55

Earned Runs	28	30

Home Runs Allowed	7	7

Strikeouts	65	59

Walks	21	28

ERA	3.83	4.44

WHIP	1.20	1.35

Isaac Mattson or Shawn Armstrong Player Notes
	Shawn Armstrong RP - CLE	Isaac Mattson RP - PIT
News
	The Guardians activated RHP Shawn Armstrong from the 60-day injured list. Ari Koslow Wed, Sep 23rd	The Pirates placed RHP Isaac Mattson on the 15-day injured list with hip inflammation. Ari Koslow Tue, Sep 8th
	Shawn Armstrong is on track to be activated from the injured list this week. Ari Koslow Tue, Sep 22nd	The Pirates recalled RHP Isaac Mattson from Triple-A Indianapolis. Ari Koslow Fri, Sep 4th
	Shawn Armstrong made a rehab appearance on Friday. Ari Koslow Sun, Sep 13th	The Pirates optioned Isaac Mattson to Triple-A Indianapolis. Ari Koslow Tue, Aug 18th
	Shawn Armstrong has started a throwing progression. Ari Koslow Tue, Sep 1st	The Pirates recalled RHP Isaac Mattson from Triple-A Indianapolis. Ari Koslow Thu, Aug 13th
	The Guardians have transferred right-hander Shawn Armstrong (calf) to the 60-day injured list. Brenton Kemp Mon, Aug 3rd	The Pirates optioned RHP Isaac Mattson to Triple-A Indianapolis. Ari Koslow Sun, Aug 2nd
Notes
There are no recent notes for these players

Isaac Mattson or Shawn Armstrong Player Schedules
Date	Opp	Opp Pitcher	VBR	Opp	Opp Pitcher	VBR
	Shawn Armstrong RP - CLE			Isaac Mattson RP - PIT
Thu, Mar 26th	@ SEA	Logan Gilbert (12-11)	#8	@ NYM	Freddy Peralta (10-11)	#51
Sat, Mar 28th	@ SEA	Bryan Woo (12-10)	#13	@ NYM	David Peterson (9-8)	#61
Sun, Mar 29th	@ SEA	Emerson Hancock (7-8)	#135	@ NYM	Nolan McLean (12-10)	#28
Mon, Mar 30th	@ LAD	Roki Sasaki (5-5)	#102	@ CIN	Chase Burns (15-3)
Tue, Mar 31st	@ LAD	Shohei Ohtani (8-2)	#1	@ CIN	Brandon Williamson (5-5)	#241
Wed, Apr 1st	@ LAD	Yoshinobu Yamamoto (14-9)	#4	@ CIN	Andrew Abbott (6-11)	#149
Fri, Apr 3rd	vs CHC	Cade Horton (1-0)		vs BAL	Kyle Bradish (7-14)
Sat, Apr 4th				vs BAL	Shane Baz (6-15)	#85
Sun, Apr 5th	vs CHC	Shota Imanaga (11-10)	#49	vs BAL	Chris Bassitt (9-5)	#175
Mon, Apr 6th	vs KC	Michael Wacha (9-10)	#99	vs SD	German Marquez (4-2)
Tue, Apr 7th	vs KC	Noah Cameron (9-8)	#91	vs SD	Nick Pivetta (3-2)	#17
Wed, Apr 8th	vs KC	Cole Ragans (1-4)		vs SD	Michael King (12-10)	#55
Fri, Apr 10th	@ ATL	Bryce Elder (8-8)		@ CHC	Shota Imanaga (11-10)	#49
Sat, Apr 11th	@ ATL	Martin Perez (9-9)	#82	@ CHC	Edward Cabrera (5-5)	#126
Sun, Apr 12th	@ ATL	Chris Sale (14-9)	#3	@ CHC	Jameson Taillon (2-6)
Mon, Apr 13th	@ STL	Matthew Liberatore (6-14)	#95	vs WSH	Cade Cavalli (13-5)	#34
Tue, Apr 14th	@ STL	Michael McGreevy (7-9)	#109	vs WSH	PJ Poulin (3-0)
Wed, Apr 15th	@ STL	Dustin May (7-9)	#35	vs WSH	Jake Irvin (2-10)	#213
Thu, Apr 16th	vs BAL	Shane Baz (6-15)	#85	vs WSH	Foster Griffin (15-6)	#54
Fri, Apr 17th	vs BAL	Chris Bassitt (9-5)	#175	vs TB	Nick Martinez (15-6)	#208
Sat, Apr 18th	vs BAL	Dean Kremer (5-5)	#81	vs TB	Drew Rasmussen (16-5)	#26
Sun, Apr 19th	vs BAL	Trevor Rogers (10-11)	#42	vs TB	Shane McClanahan (10-7)
Tue, Apr 21st	vs HOU	Ryan Weiss (0-3)		@ TEX	Kumar Rocker (6-11)	#84
Wed, Apr 22nd	vs HOU	Peter Lambert (8-10)	#185	@ TEX	Jack Leiter (3-7)
Thu, Apr 23rd				@ TEX	Jacob deGrom (11-11)	#12
Fri, Apr 24th	@ TOR	Max Scherzer (4-9)	#127	@ MIL	Brandon Woodruff (2-2)
Sat, Apr 25th	@ TOR	Kevin Gausman (9-12)	#36	@ MIL	Jacob Misiorowski (16-5)	#7
Sun, Apr 26th	@ TOR	Patrick Corbin (3-4)		@ MIL	Kyle Harrison (11-5)	#62
Mon, Apr 27th	vs TB	Steven Matz (6-6)	#201	vs STL	Dustin May (7-9)	#35
Tue, Apr 28th	vs TB	Nick Martinez (15-6)	#208	vs STL	Kyle Leahy (10-5)	#79
Wed, Apr 29th	vs TB	Drew Rasmussen (16-5)	#26	vs STL	Andre Pallante (12-9)	#87
Thu, Apr 30th				vs STL	Hunter Dobbins (3-3)
Fri, May 1st	@ ATH	J.T. Ginn (9-8)		vs CIN	Brady Singer (6-15)	#221
Sat, May 2nd	@ ATH	Jacob Lopez (7-5)	#251	vs CIN	Rhett Lowder (7-12)	#200
Sun, May 3rd	@ ATH	Aaron Civale (6-8)	#219	vs CIN	Chase Burns (15-3)
Tue, May 5th	@ KC	Stephen Kolek (4-3)		@ ARI	Eduardo Rodriguez (16-7)	#191
Wed, May 6th	@ KC	Cole Ragans (1-4)		@ ARI	Michael Soroka (9-5)	#48
Thu, May 7th	@ KC	Seth Lugo (7-9)	#184	@ ARI	Zac Gallen (3-9)	#216
Fri, May 8th	vs MIN	Connor Prielipp (6-7)	#110	@ SF	Robbie Ray (13-8)	#198
Sat, May 9th	vs MIN	Joe Ryan (7-10)	#25	@ SF	Landen Roupp (9-14)
Sun, May 10th	vs MIN	Andrew Morris (4-8)	#176	@ SF	Tyler Mahle (7-10)	#71
Tue, May 12th	vs LAA	Walbert Urena (9-11)	#40	vs COL	Michael Lorenzen (3-13)
Wed, May 13th	vs LAA	Reid Detmers (7-8)	#16	vs COL	Jose Quintana (2-3)	#281
Thu, May 14th				vs COL	Chase Dollander (3-3)
Fri, May 15th	vs CIN	Andrew Abbott (6-11)	#149	vs PHI	Aaron Nola (7-12)	#68
Sat, May 16th	vs CIN	Chris Paddack (0-7)		vs PHI	Cristopher Sanchez (18-7)	#6
Sun, May 17th	vs CIN	Brady Singer (6-15)	#221	vs PHI	Zack Wheeler (14-5)	#5
Tue, May 19th	@ DET	Keider Montero (10-9)	#188	@ STL	Matthew Liberatore (6-14)	#95
Wed, May 20th	@ DET	Drew Anderson (5-7)	#38	@ STL	Michael McGreevy (7-9)	#109
Thu, May 21st	@ DET	Casey Mize (6-10)	#47	@ STL	Dustin May (7-9)	#35
Fri, May 22nd	@ PHI	Cristopher Sanchez (18-7)	#6	@ TOR	Kevin Gausman (9-12)	#36
Sat, May 23rd	@ PHI	Zack Wheeler (14-5)	#5	@ TOR	Patrick Corbin (3-4)
Sun, May 24th	@ PHI	Andrew Painter (3-10)	#125	@ TOR	Dylan Cease (11-6)
Mon, May 25th	vs WSH	PJ Poulin (3-0)		vs CHC	Ben Brown (4-2)
Tue, May 26th	vs WSH	Cade Cavalli (13-5)	#34	vs CHC	Jordan Wicks (0-2)
Wed, May 27th	vs WSH	PJ Poulin (3-0)		vs CHC	Jameson Taillon (2-6)
Thu, May 28th				vs CHC	Colin Rea (8-8)	#262
Fri, May 29th	vs BOS	Tyler Samaniego		vs MIN	Taj Bradley (12-6)	#44
Sat, May 30th	vs BOS	Sonny Gray (18-5)	#45	vs MIN	Bailey Ober (7-7)	#155
Sun, May 31st	vs BOS	Ranger Suarez (8-5)	#70	vs MIN	Zebby Matthews (9-11)	#134
Tue, Jun 2nd	@ NYY	Cam Schlittler (14-6)	#9	@ HOU	Mike Burrows (4-9)
Wed, Jun 3rd	@ NYY	Gerrit Cole (10-9)	#18	@ HOU	Spencer Arrighetti (9-9)	#181
Thu, Jun 4th	@ NYY	Carlos Rodon (7-3)	#32	@ HOU	Kai-Wei Teng (5-7)	#220
Fri, Jun 5th	@ TEX	Kumar Rocker (6-11)	#84	@ ATL	Martin Perez (9-9)	#82
Sat, Jun 6th	@ TEX	Jack Leiter (3-7)		@ ATL	Spencer Strider (4-2)
Sun, Jun 7th	@ TEX	Jacob deGrom (11-11)	#12	@ ATL	Bryce Elder (8-8)
Tue, Jun 9th	vs NYY	Gerrit Cole (10-9)	#18	vs LAD	Eric Lauer (8-7)
Wed, Jun 10th	vs NYY	Carlos Rodon (7-3)	#32	vs LAD	Shohei Ohtani (8-2)	#1
Thu, Jun 11th				vs LAD	Justin Wrobleski (12-5)	#50
Fri, Jun 12th	vs DET	Jack Flaherty (3-8)	#179	vs MIA	Sandy Alcantara (13-11)	#77
Sat, Jun 13th	vs DET	Tarik Skubal (12-7)	#2	vs MIA	Lake Bachar (2-4)	#156
Sun, Jun 14th				vs MIA	Max Meyer (9-1)
Mon, Jun 15th				@ ATH	J.T. Ginn (9-8)
Tue, Jun 16th	@ MIL	Robert Gasser (5-5)	#43	@ ATH	Jack Perkins (3-13)	#171
Wed, Jun 17th	@ MIL	Brandon Sproat (3-7)		@ ATH	Aaron Civale (6-8)	#219
Fri, Jun 19th	@ HOU	Tatsuya Imai (6-4)	#231	@ COL	Kyle Freeland (4-12)	#187
Sat, Jun 20th	@ HOU	Spencer Arrighetti (9-9)	#181	@ COL	Tomoyuki Sugano (12-12)	#263
Sun, Jun 21st	@ HOU	Kai-Wei Teng (5-7)	#220	@ COL	Michael Lorenzen (3-13)
Tue, Jun 23rd	@ CWS	Sean Burke (11-7)	#58	vs SEA	George Kirby (9-11)	#33
Wed, Jun 24th	@ CWS	Chris Murphy (3-0)		vs SEA	Bryan Woo (12-10)	#13
Thu, Jun 25th				vs SEA	Bryce Miller (4-10)	#31
Fri, Jun 26th	vs SEA	Luis Castillo (4-11)	#97	vs CIN	Andrew Abbott (6-11)	#149
Sat, Jun 27th	vs SEA	Logan Gilbert (12-11)	#8	vs CIN	Chase Burns (15-3)
Sun, Jun 28th	vs SEA	Emerson Hancock (7-8)	#135	vs CIN	Brady Singer (6-15)	#221
Mon, Jun 29th	vs TEX	Tyler Alexander (5-2)	#159	@ PHI	Aaron Nola (7-12)	#68
Tue, Jun 30th	vs TEX	Jacob deGrom (11-11)	#12	@ PHI	Cristopher Sanchez (18-7)	#6
Wed, Jul 1st	vs TEX	MacKenzie Gore (8-11)	#39	@ PHI	Zack Wheeler (14-5)	#5
Thu, Jul 2nd	vs CWS	Davis Martin (9-8)	#73	@ PHI	Alan Rangel (0-3)
Fri, Jul 3rd	vs CWS	Anthony Kay (10-9)	#121	@ WSH	Foster Griffin (15-6)	#54
Sat, Jul 4th	vs CWS	Sean Burke (11-7)	#58	@ WSH	Carson Palmquist (0-2)
Sun, Jul 5th	vs CWS	Chris Murphy (3-0)		@ WSH	Cade Cavalli (13-5)	#34
Tue, Jul 7th	@ MIN	Taj Bradley (12-6)	#44	vs ATL	Hurston Waldrep (0-1)
Wed, Jul 8th	@ MIN	Connor Prielipp (6-7)	#110	vs ATL	Grant Holmes (10-6)	#193
Thu, Jul 9th	@ MIN	Bailey Ober (7-7)	#155	vs ATL	Bryce Elder (8-8)
Sat, Jul 11th	@ MIA	Eury Perez (8-11)	#22	vs MIL	Shane Drohan (7-5)	#128
Sun, Jul 12th	@ MIA	Tyler Phillips (5-6)	#247	vs MIL	Robert Gasser (5-5)	#43
Sat, Jul 18th	vs PIT	Mason Montgomery (6-4)	#86	@ CLE	Logan Allen (0-0)	#206
Sun, Jul 19th	vs PIT	Paul Skenes (10-11)	#14	@ CLE	Joey Cantillo (11-9)	#63
Mon, Jul 20th	vs MIN	Joe Ryan (7-10)	#25	@ NYY	Ryan Weathers (5-8)
Wed, Jul 22nd	vs MIN	Bailey Ober (7-7)	#155	@ NYY	Max Fried (5-5)	#21
Fri, Jul 24th	@ TB	Shane McClanahan (10-7)		vs CHC	Matthew Boyd (10-5)	#78
Sat, Jul 25th	@ TB	Nick Martinez (15-6)	#208	vs CHC	Shota Imanaga (11-10)	#49
Sun, Jul 26th	@ TB	Drew Rasmussen (16-5)	#26	vs CHC	Jameson Taillon (2-6)
Mon, Jul 27th				vs ARI	Merrill Kelly (10-14)	#146
Tue, Jul 28th	@ CIN	Caleb Ferguson		vs ARI	Brandon Pfaadt (8-3)	#130
Wed, Jul 29th	@ CIN	Brady Singer (6-15)	#221	vs ARI	Eduardo Rodriguez (16-7)	#191
Thu, Jul 30th				@ CIN	Rhett Lowder (7-12)	#200
Fri, Jul 31st	vs ARI	Mitch Bratt (1-3)		@ CIN	Hunter Greene (2-2)
Sat, Aug 1st	vs ARI	Kohl Drake (0-1)	#123	@ CIN	Andrew Abbott (6-11)	#149
Sun, Aug 2nd	vs ARI	Merrill Kelly (10-14)	#146	@ CIN	Chase Burns (15-3)
Mon, Aug 3rd				@ MIL	Brandon Sproat (3-7)
Tue, Aug 4th	vs NYM	Sean Manaea (6-8)	#46	@ MIL	Logan Henderson (11-3)	#11
Wed, Aug 5th	vs NYM	Christian Scott (4-5)		@ MIL	Kyle Harrison (11-5)	#62
Thu, Aug 6th	vs NYM	Nolan McLean (12-10)	#28	@ MIL	Dustin May (7-9)	#35
Fri, Aug 7th	@ CWS	Noah Schultz (4-9)	#154	vs NYM	Zac Thornton (5-6)	#122
Sat, Aug 8th	@ CWS	Anthony Kay (10-9)	#121	vs NYM	Robert Stock (1-3)
Sun, Aug 9th	@ CWS	Davis Martin (9-8)	#73	vs NYM	Sean Manaea (6-8)	#46
Tue, Aug 11th	@ DET	Drew Anderson (5-7)	#38	@ MIA	Eury Perez (8-11)	#22
Wed, Aug 12th	@ DET	Framber Valdez (10-12)	#53	@ MIA	Janson Junk (6-9)	#138
Thu, Aug 13th	@ DET	Keider Montero (10-9)	#188	@ MIA	Tyler Phillips (5-6)	#247
Fri, Aug 14th	vs SD	Michael King (12-10)	#55	vs BOS	Jake Bennett (9-7)	#210
Sat, Aug 15th	vs SD	Wandy Peralta (3-3)	#264	vs BOS	Sonny Gray (18-5)	#45
Sun, Aug 16th	vs SD	Casey Mize (6-10)	#47	vs BOS	Patrick Sandoval (1-7)	#92
Mon, Aug 17th				vs DET	Framber Valdez (10-12)	#53
Tue, Aug 18th	vs SF	Carson Whisenhunt (3-4)		vs DET	Keider Montero (10-9)	#188
Wed, Aug 19th	vs SF	Matt Wilkinson (1-3)	#150	vs DET	Jackson Jobe (3-3)	#115
Fri, Aug 21st	@ COL	Tanner Gordon (1-6)	#222	@ LAD	Yoshinobu Yamamoto (14-9)	#4
Sat, Aug 22nd	@ COL	Gabriel Hughes (0-8)		@ LAD	Tarik Skubal (12-7)	#2
Sun, Aug 23rd	@ COL	Tomoyuki Sugano (12-12)	#263	@ LAD	Blake Snell (4-1)	#15
Mon, Aug 24th	@ LAA	George Klassen (2-2)		@ SD	Robbie Ray (13-8)	#198
Tue, Aug 25th	@ LAA	Walbert Urena (9-11)	#40	@ SD	Michael King (12-10)	#55
Wed, Aug 26th	@ LAA	Grayson Rodriguez (5-8)	#64	@ SD	Randy Vasquez (10-6)	#245
Fri, Aug 28th	vs KC	Michael Wacha (9-10)	#99	@ STL	Quinn Mathews (2-4)	#101
Sat, Aug 29th	vs KC	Daniel Lynch (6-6)	#256	@ STL	Kyle Leahy (10-5)	#79
Sun, Aug 30th	vs KC	Seth Lugo (7-9)	#184	@ STL	Matthew Liberatore (6-14)	#95
Tue, Sep 1st	vs TOR	Spencer Miles (6-2)	#98	vs SF	Logan Webb (8-9)
Wed, Sep 2nd	vs TOR	Dylan Cease (11-6)		vs SF	Landen Roupp (9-14)
Thu, Sep 3rd	vs TOR	Jose Soriano (12-8)	#23	vs SF	Blade Tidwell (1-2)
Fri, Sep 4th	vs DET	Andrew Sears (0-1)	#212	vs LAA	Ryan Johnson (5-9)	#170
Sat, Sep 5th	vs DET	Framber Valdez (10-12)	#53	vs LAA	Yusei Kikuchi (1-7)	#57
Sun, Sep 6th	vs DET	Jackson Jobe (3-3)	#115	vs LAA	Walbert Urena (9-11)	#40
Tue, Sep 8th	@ BAL	Brandon Young (9-6)	#168	@ CWS	Sean Burke (11-7)	#58
Wed, Sep 9th	@ BAL	Shane Baz (6-15)	#85	@ CWS	Davis Martin (9-8)	#73
Thu, Sep 10th				@ CWS	Hagen Smith (3-3)	#120
Fri, Sep 11th	@ MIN	Taj Bradley (12-6)	#44	@ CHC	Shota Imanaga (11-10)	#49
Sat, Sep 12th	@ MIN	Connor Prielipp (6-7)	#110	@ CHC	Clay Holmes (6-8)	#83
Sun, Sep 13th	@ MIN	Joe Ryan (7-10)	#25	@ CHC	Matthew Boyd (10-5)	#78
Tue, Sep 15th	vs CWS	Chris Murphy (3-0)		vs MIL	Jacob Misiorowski (16-5)	#7
Wed, Sep 16th	vs CWS	Anthony Kay (10-9)	#121	vs MIL	Logan Henderson (11-3)	#11
Thu, Sep 17th				vs MIL	Kyle Harrison (11-5)	#62
Fri, Sep 18th	vs ATH	Mason Barnett (1-4)	#278	vs KC	Randy Dobnak (3-5)	#254
Sat, Sep 19th	vs ATH	Jacob Lopez (7-5)	#251	vs KC	Noah Cameron (9-8)	#91
Sun, Sep 20th	vs ATH	Jack Perkins (3-13)	#171	vs KC	Michael Wacha (9-10)	#99
Tue, Sep 22nd	@ BOS	Payton Tolle (9-6)	#30	vs STL	Andre Pallante (12-9)	#87
Wed, Sep 23rd	@ BOS	Sonny Gray (18-5)	#45	vs STL	Matthew Liberatore (6-14)	#95
Thu, Sep 24th	@ BOS	Ranger Suarez (8-5)	#70	vs STL	Kyle Leahy (10-5)	#79
Fri, Sep 25th	@ KC	Noah Cameron (9-8)	#91	@ DET	Jackson Jobe (3-3)	#115
Sat, Sep 26th	@ KC	Michael Wacha (9-10)	#99	@ DET	Justin Verlander (0-1)	#129
Sun, Sep 27th	@ KC	Daniel Lynch (6-6)	#256	@ DET	River Ryan (0-1)	#75
Fri, Mar 27th	@ SEA	George Kirby (9-11)	#33
Mon, Apr 20th	vs HOU	Spencer Arrighetti (9-9)	#181
Mon, May 4th	@ KC	Michael Wacha (9-10)	#99
Mon, May 11th	vs LAA	Brent Suter (3-2)
Mon, May 18th	@ DET	Framber Valdez (10-12)	#53
Mon, Jun 8th	vs NYY	Will Warren (11-6)	#69
Thu, Jun 18th	@ MIL	Shane Drohan (7-5)	#128
Mon, Jun 22nd	@ CWS	Anthony Kay (10-9)	#121
Fri, Jul 10th	@ MIA	Sandy Alcantara (13-11)	#77
Tue, Jul 21st	vs MIN	Kendry Rojas (1-1)
Thu, Jul 23rd	vs MIN	Taj Bradley (12-6)	#44
Thu, Aug 20th	vs SF	Landen Roupp (9-14)
Mon, Sep 7th	@ BAL	Trevor Rogers (10-11)	#42
Mon, Sep 14th	vs CWS	Sean Newcomb (2-5)	#151