Isaac Mattson or Rob Zastryzny

Baseball Stats Comparison

Stats
Projections
News & Notes
Schedule

Isaac Mattson or Rob Zastryzny Player Statistics
	Isaac Mattson RP - PIT	Rob Zastryzny RP - MIL
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	‐

Isaac Mattson or Rob Zastryzny Player Projections
	Isaac Mattson RP - PIT	Rob Zastryzny RP - MIL
2026 Projections


Games Played	57	42

Games Started	0	1

Innings Pitched	60.8	41.5

Wins	3	2

Losses	3	2

Saves	2	0

Blown Saves	1	0

Holds	14	4

Hits Allowed	55	39

Earned Runs	30	21

Home Runs Allowed	7	6

Strikeouts	59	39

Walks	28	16

ERA	4.44	4.61

WHIP	1.35	1.34

Isaac Mattson or Rob Zastryzny Player Notes
	Isaac Mattson RP - PIT	Rob Zastryzny RP - MIL
News
	The Pirates placed RHP Isaac Mattson on the 15-day injured list with hip inflammation. Ari Koslow Tue, Sep 8th	Rob Zastryzny was sent to Triple-A Nashville on a rehab assignment. Ari Koslow Sun, Sep 13th
	The Pirates recalled RHP Isaac Mattson from Triple-A Indianapolis. Ari Koslow Fri, Sep 4th	Rob Zastryzny was pulled from his rehab assignment due to recurring symptoms. Ari Koslow Thu, Aug 20th
	The Pirates optioned Isaac Mattson to Triple-A Indianapolis. Ari Koslow Tue, Aug 18th	The Milwaukee Brewers have transferred reliever Rob Zastryzny (trap) to the 60-day injured list. Brenton Kemp Wed, Jul 15th
	The Pirates recalled RHP Isaac Mattson from Triple-A Indianapolis. Ari Koslow Thu, Aug 13th	The Brewers say Rob Zastryzny will begin a rehab assignment in the Arizona Complex League on Friday. Ari Koslow Fri, Jul 3rd
	The Pirates optioned RHP Isaac Mattson to Triple-A Indianapolis. Ari Koslow Sun, Aug 2nd	Rob Zastryzny is scheduled to throw a bullpen session on Sunday. Nicholas Rodriguez Wed, Jun 17th
Notes
There are no recent notes for these players

Isaac Mattson or Rob Zastryzny Player Schedules
Date	Opp	Opp Pitcher	VBR	Opp	Opp Pitcher	VBR
	Isaac Mattson RP - PIT			Rob Zastryzny RP - MIL
Thu, Mar 26th	@ NYM	Freddy Peralta (8-11)	#52	vs CWS	Shane Smith (0-2)	#264
Sat, Mar 28th	@ NYM	David Peterson (7-8)	#101	vs CWS	Sean Burke (8-7)	#82
Sun, Mar 29th	@ NYM	Nolan McLean (11-9)	#33	vs CWS	Anthony Kay (9-9)	#125
Mon, Mar 30th	@ CIN	Chase Burns (15-3)	#31	vs TB	Nick Martinez (14-4)	#90
Tue, Mar 31st	@ CIN	Brandon Williamson (3-4)	#399	vs TB	Shane McClanahan (10-7)	#152
Wed, Apr 1st	@ CIN	Andrew Abbott (6-11)	#128	vs TB	Drew Rasmussen (14-5)	#14
Fri, Apr 3rd	vs BAL	Kyle Bradish (7-14)	#61
Sat, Apr 4th	vs BAL	Shane Baz (6-15)	#69	@ KC	Seth Lugo (7-8)	#139
Sun, Apr 5th	vs BAL	Chris Bassitt (7-5)	#143	@ KC	Kris Bubic (3-2)	#175
Mon, Apr 6th	vs SD	German Marquez (4-2)	#369	@ BOS	Brayan Bello (6-7)	#112
Tue, Apr 7th	vs SD	Nick Pivetta (2-2)	#32	@ BOS	Garrett Crochet (3-3)
Wed, Apr 8th	vs SD	Michael King (11-9)	#60	@ BOS	Sonny Gray (17-5)	#37
Fri, Apr 10th	@ CHC	Shota Imanaga (10-10)	#30	vs WSH	Jake Irvin (2-9)	#149
Sat, Apr 11th	@ CHC	Edward Cabrera (5-5)	#258	vs WSH	Foster Griffin (15-5)	#57
Sun, Apr 12th	@ CHC	Jameson Taillon (2-6)		vs WSH	Zack Littell (8-8)	#324
Mon, Apr 13th	vs WSH	Cade Cavalli (12-5)	#36
Tue, Apr 14th	vs WSH	PJ Poulin (3-0)		vs TOR	Kevin Gausman (9-12)	#26
Wed, Apr 15th	vs WSH	Jake Irvin (2-9)	#149	vs TOR	Dylan Cease (10-5)	#4
Thu, Apr 16th	vs WSH	Foster Griffin (15-5)	#57	vs TOR	Patrick Corbin (3-4)
Fri, Apr 17th	vs TB	Nick Martinez (14-4)	#90	@ MIA	Janson Junk (6-9)	#99
Sat, Apr 18th	vs TB	Drew Rasmussen (14-5)	#14	@ MIA	Sandy Alcantara (13-10)	#88
Sun, Apr 19th	vs TB	Shane McClanahan (10-7)	#152	@ MIA	Eury Perez (7-11)	#45
Tue, Apr 21st	@ TEX	Kumar Rocker (5-11)	#117	@ DET	Keider Montero (9-8)	#134
Wed, Apr 22nd	@ TEX	Jack Leiter (3-7)	#230	@ DET	Casey Mize (5-9)	#54
Thu, Apr 23rd	@ TEX	Jacob deGrom (10-9)	#3	@ DET	Tarik Skubal (9-7)	#1
Fri, Apr 24th	@ MIL	Brandon Woodruff (2-2)		vs PIT	Paul Skenes (10-11)	#6
Sat, Apr 25th	@ MIL	Jacob Misiorowski (14-5)	#7	vs PIT	Mitch Keller (6-8)
Sun, Apr 26th	@ MIL	Kyle Harrison (10-4)	#62	vs PIT	Carmen Mlodzinski (7-6)	#98
Mon, Apr 27th	vs STL	Dustin May (7-9)	#51
Tue, Apr 28th	vs STL	Kyle Leahy (10-4)	#71	vs ARI	Merrill Kelly (9-13)	#131
Wed, Apr 29th	vs STL	Andre Pallante (12-6)	#92	vs ARI	Eduardo Rodriguez (15-5)	#114
Thu, Apr 30th	vs STL	Hunter Dobbins (3-3)		vs ARI	Michael Soroka (8-5)	#78
Fri, May 1st	vs CIN	Brady Singer (6-14)	#155	@ WSH	Jake Irvin (2-9)	#149
Sat, May 2nd	vs CIN	Rhett Lowder (6-10)	#227	@ WSH	Foster Griffin (15-5)	#57
Sun, May 3rd	vs CIN	Chase Burns (15-3)	#31	@ WSH	PJ Poulin (3-0)
Tue, May 5th	@ ARI	Eduardo Rodriguez (15-5)	#114
Wed, May 6th	@ ARI	Michael Soroka (8-5)	#78	@ STL	Andre Pallante (12-6)	#92
Thu, May 7th	@ ARI	Zac Gallen (3-9)	#118
Fri, May 8th	@ SF	Robbie Ray (12-8)	#105	vs NYY	Max Fried (4-4)	#17
Sat, May 9th	@ SF	Landen Roupp (9-13)	#100	vs NYY	Cam Schlittler (13-6)	#15
Sun, May 10th	@ SF	Tyler Mahle (6-10)	#58	vs NYY	Carlos Rodon (6-3)	#49
Tue, May 12th	vs COL	Michael Lorenzen (3-12)	#119	vs SD	Bradgley Rodriguez (3-3)	#124
Wed, May 13th	vs COL	Jose Quintana (2-3)	#401	vs SD	Michael King (11-9)	#60
Thu, May 14th	vs COL	Chase Dollander (3-3)		vs SD	Griffin Canning (4-9)	#233
Fri, May 15th	vs PHI	Aaron Nola (6-10)	#50	@ MIN	Joe Ryan (6-9)	#27
Sat, May 16th	vs PHI	Cristopher Sanchez (17-5)	#5	@ MIN	Connor Prielipp (5-7)	#77
Sun, May 17th	vs PHI	Zack Wheeler (12-5)	#9	@ MIN	Bailey Ober (7-5)	#87
Tue, May 19th	@ STL	Matthew Liberatore (5-14)	#83	@ CHC	Ben Brown (4-2)
Wed, May 20th	@ STL	Michael McGreevy (6-9)	#110	@ CHC	Edward Cabrera (5-5)	#258
Thu, May 21st	@ STL	Dustin May (7-9)	#51
Fri, May 22nd	@ TOR	Kevin Gausman (9-12)	#26	vs LAD	Justin Wrobleski (11-5)	#164
Sat, May 23rd	@ TOR	Patrick Corbin (3-4)		vs LAD	Roki Sasaki (5-5)	#106
Sun, May 24th	@ TOR	Dylan Cease (10-5)	#4	vs LAD	Yoshinobu Yamamoto (13-8)	#8
Mon, May 25th	vs CHC	Ben Brown (4-2)		vs STL	Matthew Liberatore (5-14)	#83
Tue, May 26th	vs CHC	Jordan Wicks (0-2)	#287	vs STL	Michael McGreevy (6-9)	#110
Wed, May 27th	vs CHC	Jameson Taillon (2-6)		vs STL	Dustin May (7-9)	#51
Thu, May 28th	vs CHC	Colin Rea (8-8)	#174
Fri, May 29th	vs MIN	Taj Bradley (11-6)	#40	@ HOU	Kai-Wei Teng (5-7)	#309
Sat, May 30th	vs MIN	Bailey Ober (7-5)	#87	@ HOU	Peter Lambert (8-9)	#138
Sun, May 31st	vs MIN	Zebby Matthews (9-10)	#85	@ HOU	Tatsuya Imai (6-4)	#94
Tue, Jun 2nd	@ HOU	Mike Burrows (4-9)	#229	vs SF	Trevor McDonald (3-7)
Wed, Jun 3rd	@ HOU	Spencer Arrighetti (8-9)	#140	vs SF	Logan Webb (8-8)	#20
Thu, Jun 4th	@ HOU	Kai-Wei Teng (5-7)	#309	vs SF	Adrian Houser (4-7)
Fri, Jun 5th	@ ATL	Martin Perez (8-9)	#154	@ COL	Ryan Feltner (5-10)	#400
Sat, Jun 6th	@ ATL	Spencer Strider (4-2)		@ COL	Zach Agnos (0-2)	#394
Sun, Jun 7th	@ ATL	Bryce Elder (8-8)		@ COL	Kyle Freeland (4-10)	#392
Tue, Jun 9th	vs LAD	Eric Lauer (8-7)	#314	@ ATH	J.T. Ginn (9-8)
Wed, Jun 10th	vs LAD	Shohei Ohtani (8-2)	#16	@ ATH	Jack Perkins (3-11)	#135
Thu, Jun 11th	vs LAD	Justin Wrobleski (11-5)	#164
Fri, Jun 12th	vs MIA	Sandy Alcantara (13-10)	#88	vs PHI	Tanner Banks
Sat, Jun 13th	vs MIA	Lake Bachar (1-3)	#181	vs PHI	Aaron Nola (6-10)	#50
Sun, Jun 14th	vs MIA	Max Meyer (9-1)		vs PHI	Cristopher Sanchez (17-5)	#5
Mon, Jun 15th	@ ATH	J.T. Ginn (9-8)
Tue, Jun 16th	@ ATH	Jack Perkins (3-11)	#135	vs CLE	Slade Cecconi (4-7)	#206
Wed, Jun 17th	@ ATH	Aaron Civale (6-7)	#205	vs CLE	Gavin Williams (13-7)	#19
Fri, Jun 19th	@ COL	Kyle Freeland (4-10)	#392	@ ATL	Martin Perez (8-9)	#154
Sat, Jun 20th	@ COL	Tomoyuki Sugano (12-9)	#402	@ ATL	Chris Sale (14-9)	#2
Sun, Jun 21st	@ COL	Michael Lorenzen (3-12)	#119	@ ATL	Bryce Elder (8-8)
Tue, Jun 23rd	vs SEA	George Kirby (9-11)	#28	@ CIN	Nick Lodolo (3-4)	#108
Wed, Jun 24th	vs SEA	Bryan Woo (12-9)	#11	@ CIN	Rhett Lowder (6-10)	#227
Thu, Jun 25th	vs SEA	Bryce Miller (4-9)	#44
Fri, Jun 26th	vs CIN	Andrew Abbott (6-11)	#128	vs CHC	Colin Rea (8-8)	#174
Sat, Jun 27th	vs CIN	Chase Burns (15-3)	#31	vs CHC	David Peterson (7-8)	#101
Sun, Jun 28th	vs CIN	Brady Singer (6-14)	#155	vs CHC	Ryan Rolison
Mon, Jun 29th	@ PHI	Aaron Nola (6-10)	#50	vs CIN	Nick Lodolo (3-4)	#108
Tue, Jun 30th	@ PHI	Cristopher Sanchez (17-5)	#5	vs CIN	Rhett Lowder (6-10)	#227
Wed, Jul 1st	@ PHI	Zack Wheeler (12-5)	#9	vs CIN	Andrew Abbott (6-11)	#128
Thu, Jul 2nd	@ PHI	Alan Rangel (0-3)	#283	vs CIN	Chase Burns (15-3)	#31
Fri, Jul 3rd	@ WSH	Foster Griffin (15-5)	#57	@ ARI
Sat, Jul 4th	@ WSH	Carson Palmquist (0-2)	#305	@ ARI	Merrill Kelly (9-13)	#131
Sun, Jul 5th	@ WSH	Cade Cavalli (12-5)	#36	@ ARI	Eduardo Rodriguez (15-5)	#114
Tue, Jul 7th	vs ATL	Hurston Waldrep (0-1)		@ STL	Hunter Dobbins (3-3)
Wed, Jul 8th	vs ATL	Grant Holmes (9-5)	#157	@ STL	Michael McGreevy (6-9)	#110
Thu, Jul 9th	vs ATL	Bryce Elder (8-8)		@ STL	Andre Pallante (12-6)	#92
Sat, Jul 11th	vs MIL	Shane Drohan (7-5)	#79	@ PIT	Bubba Chandler (7-9)	#109
Sun, Jul 12th	vs MIL	Robert Gasser (4-5)	#93	@ PIT	Paul Skenes (10-11)	#6
Sat, Jul 18th	@ CLE	Logan Allen (0-0)	#268	vs MIA	Max Meyer (9-1)
Sun, Jul 19th	@ CLE	Joey Cantillo (9-9)	#66	vs MIA	Eury Perez (7-11)	#45
Mon, Jul 20th	@ NYY	Ryan Weathers (5-8)	#187	vs NYM	Freddy Peralta (8-11)	#52
Wed, Jul 22nd	@ NYY	Max Fried (4-4)	#17	vs NYM	Christian Scott (4-4)	#39
Fri, Jul 24th	vs CHC	Matthew Boyd (8-4)	#59	vs COL	Tomoyuki Sugano (12-9)	#402
Sat, Jul 25th	vs CHC	Shota Imanaga (10-10)	#30	vs COL	Ryan Feltner (5-10)	#400
Sun, Jul 26th	vs CHC	Jameson Taillon (2-6)		vs COL	Kyle Freeland (4-10)	#392
Mon, Jul 27th	vs ARI	Merrill Kelly (9-13)	#131	@ SF	Tyler Mahle (6-10)	#58
Tue, Jul 28th	vs ARI	Brandon Pfaadt (7-3)	#115	@ SF	Landen Roupp (9-13)	#100
Wed, Jul 29th	vs ARI	Eduardo Rodriguez (15-5)	#114	@ SF	Logan Webb (8-8)	#20
Thu, Jul 30th	@ CIN	Rhett Lowder (6-10)	#227
Fri, Jul 31st	@ CIN	Hunter Greene (2-2)		@ LAA	Ryan Johnson (4-8)	#177
Sat, Aug 1st	@ CIN	Andrew Abbott (6-11)	#128	@ LAA	Brent Suter (2-2)	#180
Sun, Aug 2nd	@ CIN	Chase Burns (15-3)	#31	@ LAA	Walbert Urena (9-10)	#150
Mon, Aug 3rd	@ MIL	Brandon Sproat (3-7)	#220	vs PIT	Bubba Chandler (7-9)	#109
Tue, Aug 4th	@ MIL	Logan Henderson (10-3)	#23	vs PIT	Jared Jones (4-6)	#38
Wed, Aug 5th	@ MIL	Kyle Harrison (10-4)	#62	vs PIT	Paul Skenes (10-11)	#6
Thu, Aug 6th	@ MIL	Dustin May (7-9)	#51	vs PIT	Braxton Ashcraft (14-6)
Fri, Aug 7th	vs NYM	Zac Thornton (4-5)	#123	vs MIN	Zebby Matthews (9-10)	#85
Sat, Aug 8th	vs NYM	Robert Stock (1-3)	#348	vs MIN	Taj Bradley (11-6)	#40
Sun, Aug 9th	vs NYM	Sean Manaea (5-7)	#67	vs MIN	Connor Prielipp (5-7)	#77
Tue, Aug 11th	@ MIA	Eury Perez (7-11)	#45	@ SD	Walker Buehler (8-6)	#167
Wed, Aug 12th	@ MIA	Janson Junk (6-9)	#99	@ SD	Robbie Ray (12-8)	#105
Thu, Aug 13th	@ MIA	Tyler Phillips (5-6)	#159	@ LAD	Roki Sasaki (5-5)	#106
Fri, Aug 14th	vs BOS	Jake Bennett (9-7)	#72	@ LAD	Yoshinobu Yamamoto (13-8)	#8
Sat, Aug 15th	vs BOS	Sonny Gray (17-5)	#37	@ LAD	Justin Wrobleski (11-5)	#164
Sun, Aug 16th	vs BOS	Patrick Sandoval (1-5)	#111	@ LAD	Tarik Skubal (9-7)	#1
Mon, Aug 17th	vs DET	Framber Valdez (10-10)	#46
Tue, Aug 18th	vs DET	Keider Montero (9-8)	#134	vs SEA	Bryce Miller (4-9)	#44
Wed, Aug 19th	vs DET	Jackson Jobe (1-2)	#148	vs SEA	Logan Gilbert (12-9)	#13
Fri, Aug 21st	@ LAD	Yoshinobu Yamamoto (13-8)	#8	vs ATL	Chris Sale (14-9)	#2
Sat, Aug 22nd	@ LAD	Tarik Skubal (9-7)	#1	vs ATL	Martin Perez (8-9)	#154
Sun, Aug 23rd	@ LAD	Blake Snell (4-1)	#10	vs ATL	Tyler Mahle (6-10)	#58
Mon, Aug 24th	@ SD	Robbie Ray (12-8)	#105
Tue, Aug 25th	@ SD	Michael King (11-9)	#60	@ NYM	Zac Thornton (4-5)	#123
Wed, Aug 26th	@ SD	Randy Vasquez (10-6)	#163	@ NYM	Robert Stock (1-3)	#348
Fri, Aug 28th	@ STL	Quinn Mathews (1-3)	#136	vs TEX	Cody Bradford (0-5)	#104
Sat, Aug 29th	@ STL	Kyle Leahy (10-4)	#71	vs TEX	Cal Quantrill (8-5)	#156
Sun, Aug 30th	@ STL	Matthew Liberatore (5-14)	#83	vs TEX	Kumar Rocker (5-11)	#117
Tue, Sep 1st	vs SF	Logan Webb (8-8)	#20	@ CHC	Matthew Boyd (8-4)	#59
Wed, Sep 2nd	vs SF	Landen Roupp (9-13)	#100	@ CHC	David Peterson (7-8)	#101
Thu, Sep 3rd	vs SF	Blade Tidwell (0-2)	#170	@ CHC	Kevin Gausman (9-12)	#26
Fri, Sep 4th	vs LAA	Ryan Johnson (4-8)	#177	@ CIN	Rhett Lowder (6-10)	#227
Sat, Sep 5th	vs LAA	Yusei Kikuchi (1-5)	#68	@ CIN	Andrew Abbott (6-11)	#128
Sun, Sep 6th	vs LAA	Walbert Urena (9-10)	#150	@ CIN	Brady Singer (6-14)	#155
Tue, Sep 8th	@ CWS	Sean Burke (8-7)	#82	vs CHC	David Peterson (7-8)	#101
Wed, Sep 9th	@ CWS	Davis Martin (9-7)	#96	vs CHC	Kevin Gausman (9-12)	#26
Thu, Sep 10th	@ CWS	Hagen Smith (3-1)	#194
Fri, Sep 11th	@ CHC	Shota Imanaga (10-10)	#30	vs CIN	Andrew Abbott (6-11)	#128
Sat, Sep 12th	@ CHC	Clay Holmes (6-7)	#63	vs CIN	Brady Singer (6-14)	#155
Sun, Sep 13th	@ CHC	Matthew Boyd (8-4)	#59	vs CIN	Chase Burns (15-3)	#31
Tue, Sep 15th	vs MIL	Jacob Misiorowski (14-5)	#7	@ PIT	Lake Bachar (1-3)	#181
Wed, Sep 16th	vs MIL	Jacob Misiorowski (14-5)	#7	@ PIT	Jared Jones (4-6)	#38
Thu, Sep 17th	vs MIL	Logan Henderson (10-3)	#23	@ PIT	Carmen Mlodzinski (7-6)	#98
Fri, Sep 18th	vs KC	Randy Dobnak (3-4)	#391	@ BAL	Kyle Bradish (7-14)	#61
Sat, Sep 19th	vs KC	Noah Cameron (9-8)	#65	@ BAL	Trevor Rogers (10-9)	#42
Sun, Sep 20th	vs KC	Michael Wacha (9-8)	#70	@ BAL	Brandon Young (9-4)	#120
Tue, Sep 22nd	vs STL	Andre Pallante (12-6)	#92	@ PHI	Zack Wheeler (12-5)	#9
Wed, Sep 23rd	vs STL			@ PHI
Thu, Sep 24th	vs STL			@ PHI
Fri, Sep 25th	@ DET			vs STL
Sat, Sep 26th	@ DET			vs STL
Sun, Sep 27th	@ DET			vs STL
Mon, May 4th				@ STL	Kyle Leahy (10-4)	#71
Mon, May 18th				@ CHC	Shota Imanaga (10-10)	#30
Mon, Jun 1st				vs SF	Landen Roupp (9-13)	#100
Mon, Jun 8th				@ ATH	Jeffrey Springs (4-13)	#203
Thu, Jun 18th				vs CLE	Parker Messick (11-9)	#35
Mon, Jun 22nd				@ CIN	Brady Singer (6-14)	#155
Mon, Jul 6th				@ STL	Dustin May (7-9)	#51
Fri, Jul 17th				vs MIA	Sandy Alcantara (13-10)	#88
Tue, Jul 21st				vs NYM	Zac Thornton (4-5)	#123
Mon, Aug 10th				@ SD	Casey Mize (5-9)	#54
Thu, Aug 20th				vs SEA	George Kirby (9-11)	#28
Thu, Aug 27th				@ NYM	Sean Manaea (5-7)	#67
Mon, Aug 31st				@ CHC	Clay Holmes (6-7)	#63
Mon, Sep 7th				vs CHC	Matthew Boyd (8-4)	#59