Who Should I Trade?

Isaac Mattson for Mason Montgomery (2026)

Summary
Stats
Projections
News & Notes
Schedule

Who Should I Trade? Player Summaries
	Experts' Pick
	Mason Montgomery SP,RP - PIT	Isaac Mattson RP - PIT
Expert Recommendation	100% Recommended by 3 of 3 experts	0% Recommended by 0 of 3 experts
Rankings

Rest of Season	# 189	# 392
VBR	# 365	‐

Projections

Strikeouts	3	1
Wins	0	0
Saves	0	0
ERA	4.07	4.46
WHIP	1.40	1.17

Misc

Injury Alert	-	IL15

Expert Ranks

Chris Welsh FantasyPros	# 73	‐

Kelly Kirby FantasyPros	# 78	# 427

Kevin Spinelli KevScores	# 359	# 418

Who Should I Trade? Player Statistics
	Mason Montgomery SP,RP - PIT	Isaac Mattson RP - PIT
2026 Stats


Games Played	67	38

Games Started	5	0

Innings Pitched	66.0	38.2

Wins	6	0

Losses	3	0

Saves	16	0

Blown Saves	2	2

Holds	9	8

Hits Allowed	42	44

Earned Runs	19	23

Home Runs Allowed	5	3

Strikeouts	99	36

Walks	26	18

ERA	2.59	5.35

WHIP	1.03	1.60

Who Should I Trade? Player Projections
	Mason Montgomery SP,RP - PIT	Isaac Mattson RP - PIT
2026 Projections


Games Played	2	3

Games Started	0	0

Innings Pitched	2.2	1.5

Wins	0	0

Losses	0	0

Saves	0	0

Blown Saves	0	0

Holds	0	0

Hits Allowed	2	1

Earned Runs	1	1

Home Runs Allowed	0	0

Strikeouts	3	1

Walks	1	1

ERA	4.07	4.46

WHIP	1.40	1.17

Who Should I Trade? Player Notes
	Mason Montgomery SP,RP - PIT	Isaac Mattson RP - PIT
News
	Mason Montgomery earned the save on Sunday against the Royals. Ari Koslow Mon, Sep 21st	The Pirates placed RHP Isaac Mattson on the 15-day injured list with hip inflammation. Ari Koslow Tue, Sep 8th
	Mason Montgomery recorded a save on Saturday against the Royals. Ari Koslow Sun, Sep 20th	The Pirates recalled RHP Isaac Mattson from Triple-A Indianapolis. Ari Koslow Fri, Sep 4th
	Mason Montgomery recorded a four-out save on Thursday against the Brewers. Ari Koslow Fri, Sep 18th	The Pirates optioned Isaac Mattson to Triple-A Indianapolis. Ari Koslow Tue, Aug 18th
	Mason Montgomery recorded another save on Sunday against the Cubs. Ari Koslow Mon, Sep 14th	The Pirates recalled RHP Isaac Mattson from Triple-A Indianapolis. Ari Koslow Thu, Aug 13th
	Mason Montgomery recorded another save on Thursday against the White Sox. Ari Koslow Fri, Sep 11th	The Pirates optioned RHP Isaac Mattson to Triple-A Indianapolis. Ari Koslow Sun, Aug 2nd
Notes
There are no recent notes for these players

Who Should I Trade? Player Schedules
Date	Opp	Opp Pitcher	VBR	Opp	Opp Pitcher	VBR
	Mason Montgomery SP,RP - PIT			Isaac Mattson RP - PIT
Thu, Mar 26th	@ NYM	Freddy Peralta (9-11)	#56	@ NYM	Freddy Peralta (9-11)	#56
Sat, Mar 28th	@ NYM	David Peterson (9-8)	#160	@ NYM	David Peterson (9-8)	#160
Sun, Mar 29th	@ NYM	Nolan McLean (12-10)	#16	@ NYM	Nolan McLean (12-10)	#16
Mon, Mar 30th	@ CIN	Chase Burns (15-3)		@ CIN	Chase Burns (15-3)
Tue, Mar 31st	@ CIN	Brandon Williamson (5-4)	#292	@ CIN	Brandon Williamson (5-4)	#292
Wed, Apr 1st	@ CIN	Andrew Abbott (6-11)	#131	@ CIN	Andrew Abbott (6-11)	#131
Fri, Apr 3rd	vs BAL	Kyle Bradish (7-14)		vs BAL	Kyle Bradish (7-14)
Sat, Apr 4th	vs BAL	Shane Baz (6-15)	#63	vs BAL	Shane Baz (6-15)	#63
Sun, Apr 5th	vs BAL	Chris Bassitt (9-5)	#95	vs BAL	Chris Bassitt (9-5)	#95
Mon, Apr 6th	vs SD	German Marquez (4-2)		vs SD	German Marquez (4-2)
Tue, Apr 7th	vs SD	Nick Pivetta (3-2)	#45	vs SD	Nick Pivetta (3-2)	#45
Wed, Apr 8th	vs SD	Michael King (12-10)	#43	vs SD	Michael King (12-10)	#43
Fri, Apr 10th	@ CHC	Shota Imanaga (11-10)	#31	@ CHC	Shota Imanaga (11-10)	#31
Sat, Apr 11th	@ CHC	Edward Cabrera (5-5)	#197	@ CHC	Edward Cabrera (5-5)	#197
Sun, Apr 12th	@ CHC	Jameson Taillon (2-6)		@ CHC	Jameson Taillon (2-6)
Mon, Apr 13th	vs WSH	Cade Cavalli (13-5)	#48	vs WSH	Cade Cavalli (13-5)	#48
Tue, Apr 14th	vs WSH	PJ Poulin (3-0)		vs WSH	PJ Poulin (3-0)
Wed, Apr 15th	vs WSH	Jake Irvin (2-9)	#142	vs WSH	Jake Irvin (2-9)	#142
Thu, Apr 16th	vs WSH	Foster Griffin (15-6)	#37	vs WSH	Foster Griffin (15-6)	#37
Fri, Apr 17th	vs TB	Nick Martinez (15-5)	#85	vs TB	Nick Martinez (15-5)	#85
Sat, Apr 18th	vs TB	Drew Rasmussen (16-5)	#18	vs TB	Drew Rasmussen (16-5)	#18
Sun, Apr 19th	vs TB	Shane McClanahan (10-7)		vs TB	Shane McClanahan (10-7)
Tue, Apr 21st	@ TEX	Kumar Rocker (5-11)	#78	@ TEX	Kumar Rocker (5-11)	#78
Wed, Apr 22nd	@ TEX	Jack Leiter (3-7)		@ TEX	Jack Leiter (3-7)
Thu, Apr 23rd	@ TEX	Jacob deGrom (11-10)	#5	@ TEX	Jacob deGrom (11-10)	#5
Fri, Apr 24th	@ MIL	Brandon Woodruff (2-2)		@ MIL	Brandon Woodruff (2-2)
Sat, Apr 25th	@ MIL	Jacob Misiorowski (15-5)	#12	@ MIL	Jacob Misiorowski (15-5)	#12
Sun, Apr 26th	@ MIL	Kyle Harrison (10-5)	#66	@ MIL	Kyle Harrison (10-5)	#66
Mon, Apr 27th	vs STL	Dustin May (7-9)	#42	vs STL	Dustin May (7-9)	#42
Tue, Apr 28th	vs STL	Kyle Leahy (10-5)	#64	vs STL	Kyle Leahy (10-5)	#64
Wed, Apr 29th	vs STL	Andre Pallante (12-8)	#94	vs STL	Andre Pallante (12-8)	#94
Thu, Apr 30th	vs STL	Hunter Dobbins (3-3)		vs STL	Hunter Dobbins (3-3)
Fri, May 1st	vs CIN	Brady Singer (6-15)	#201	vs CIN	Brady Singer (6-15)	#201
Sat, May 2nd	vs CIN	Rhett Lowder (6-12)	#293	vs CIN	Rhett Lowder (6-12)	#293
Sun, May 3rd	vs CIN	Chase Burns (15-3)		vs CIN	Chase Burns (15-3)
Tue, May 5th	@ ARI	Eduardo Rodriguez (15-7)	#86	@ ARI	Eduardo Rodriguez (15-7)	#86
Wed, May 6th	@ ARI	Michael Soroka (9-5)	#49	@ ARI	Michael Soroka (9-5)	#49
Thu, May 7th	@ ARI	Zac Gallen (3-9)	#122	@ ARI	Zac Gallen (3-9)	#122
Fri, May 8th	@ SF	Robbie Ray (13-8)	#127	@ SF	Robbie Ray (13-8)	#127
Sat, May 9th	@ SF	Landen Roupp (9-14)	#102	@ SF	Landen Roupp (9-14)	#102
Sun, May 10th	@ SF	Tyler Mahle (7-10)	#53	@ SF	Tyler Mahle (7-10)	#53
Tue, May 12th	vs COL	Michael Lorenzen (3-13)		vs COL	Michael Lorenzen (3-13)
Wed, May 13th	vs COL	Jose Quintana (2-3)	#340	vs COL	Jose Quintana (2-3)	#340
Thu, May 14th	vs COL	Chase Dollander (3-3)		vs COL	Chase Dollander (3-3)
Fri, May 15th	vs PHI	Aaron Nola (7-11)	#52	vs PHI	Aaron Nola (7-11)	#52
Sat, May 16th	vs PHI	Cristopher Sanchez (18-6)	#11	vs PHI	Cristopher Sanchez (18-6)	#11
Sun, May 17th	vs PHI	Zack Wheeler (13-5)	#7	vs PHI	Zack Wheeler (13-5)	#7
Tue, May 19th	@ STL	Matthew Liberatore (6-14)	#90	@ STL	Matthew Liberatore (6-14)	#90
Wed, May 20th	@ STL	Michael McGreevy (7-9)	#117	@ STL	Michael McGreevy (7-9)	#117
Thu, May 21st	@ STL	Dustin May (7-9)	#42	@ STL	Dustin May (7-9)	#42
Fri, May 22nd	@ TOR	Kevin Gausman (9-12)	#21	@ TOR	Kevin Gausman (9-12)	#21
Sat, May 23rd	@ TOR	Patrick Corbin (3-4)		@ TOR	Patrick Corbin (3-4)
Sun, May 24th	@ TOR	Dylan Cease (11-6)	#128	@ TOR	Dylan Cease (11-6)	#128
Mon, May 25th	vs CHC	Ben Brown (4-2)		vs CHC	Ben Brown (4-2)
Tue, May 26th	vs CHC	Jordan Wicks (0-2)		vs CHC	Jordan Wicks (0-2)
Wed, May 27th	vs CHC	Jameson Taillon (2-6)		vs CHC	Jameson Taillon (2-6)
Thu, May 28th	vs CHC	Colin Rea (8-8)	#278	vs CHC	Colin Rea (8-8)	#278
Fri, May 29th	vs MIN	Taj Bradley (12-6)	#88	vs MIN	Taj Bradley (12-6)	#88
Sat, May 30th	vs MIN	Bailey Ober (7-6)	#110	vs MIN	Bailey Ober (7-6)	#110
Sun, May 31st	vs MIN	Zebby Matthews (9-11)	#140	vs MIN	Zebby Matthews (9-11)	#140
Tue, Jun 2nd	@ HOU	Mike Burrows (4-9)	#225	@ HOU	Mike Burrows (4-9)	#225
Wed, Jun 3rd	@ HOU	Spencer Arrighetti (9-9)	#254	@ HOU	Spencer Arrighetti (9-9)	#254
Thu, Jun 4th	@ HOU	Kai-Wei Teng (5-7)	#167	@ HOU	Kai-Wei Teng (5-7)	#167
Fri, Jun 5th	@ ATL	Martin Perez (9-9)	#119	@ ATL	Martin Perez (9-9)	#119
Sat, Jun 6th	@ ATL	Spencer Strider (4-2)		@ ATL	Spencer Strider (4-2)
Sun, Jun 7th	@ ATL	Bryce Elder (8-8)		@ ATL	Bryce Elder (8-8)
Tue, Jun 9th	vs LAD	Eric Lauer (8-7)		vs LAD	Eric Lauer (8-7)
Wed, Jun 10th	vs LAD	Shohei Ohtani (8-2)	#8	vs LAD	Shohei Ohtani (8-2)	#8
Thu, Jun 11th	vs LAD	Justin Wrobleski (12-5)	#51	vs LAD	Justin Wrobleski (12-5)	#51
Fri, Jun 12th	vs MIA	Sandy Alcantara (13-11)	#91	vs MIA	Sandy Alcantara (13-11)	#91
Sat, Jun 13th	vs MIA	Lake Bachar (1-4)	#146	vs MIA	Lake Bachar (1-4)	#146
Sun, Jun 14th	vs MIA	Max Meyer (9-1)		vs MIA	Max Meyer (9-1)
Mon, Jun 15th	@ ATH	J.T. Ginn (9-8)		@ ATH	J.T. Ginn (9-8)
Tue, Jun 16th	@ ATH	Jack Perkins (3-12)	#126	@ ATH	Jack Perkins (3-12)	#126
Wed, Jun 17th	@ ATH	Aaron Civale (6-7)	#152	@ ATH	Aaron Civale (6-7)	#152
Fri, Jun 19th	@ COL	Kyle Freeland (4-11)	#248	@ COL	Kyle Freeland (4-11)	#248
Sat, Jun 20th	@ COL	Tomoyuki Sugano (12-11)	#336	@ COL	Tomoyuki Sugano (12-11)	#336
Sun, Jun 21st	@ COL	Michael Lorenzen (3-13)		@ COL	Michael Lorenzen (3-13)
Tue, Jun 23rd	vs SEA	George Kirby (9-11)	#15	vs SEA	George Kirby (9-11)	#15
Wed, Jun 24th	vs SEA	Bryan Woo (12-9)	#3	vs SEA	Bryan Woo (12-9)	#3
Thu, Jun 25th	vs SEA	Bryce Miller (4-9)	#22	vs SEA	Bryce Miller (4-9)	#22
Fri, Jun 26th	vs CIN	Andrew Abbott (6-11)	#131	vs CIN	Andrew Abbott (6-11)	#131
Sat, Jun 27th	vs CIN	Chase Burns (15-3)		vs CIN	Chase Burns (15-3)
Sun, Jun 28th	vs CIN	Brady Singer (6-15)	#201	vs CIN	Brady Singer (6-15)	#201
Mon, Jun 29th	@ PHI	Aaron Nola (7-11)	#52	@ PHI	Aaron Nola (7-11)	#52
Tue, Jun 30th	@ PHI	Cristopher Sanchez (18-6)	#11	@ PHI	Cristopher Sanchez (18-6)	#11
Wed, Jul 1st	@ PHI	Zack Wheeler (13-5)	#7	@ PHI	Zack Wheeler (13-5)	#7
Thu, Jul 2nd	@ PHI	Alan Rangel (0-3)	#307	@ PHI	Alan Rangel (0-3)	#307
Fri, Jul 3rd	@ WSH	Foster Griffin (15-6)	#37	@ WSH	Foster Griffin (15-6)	#37
Sat, Jul 4th	@ WSH	Carson Palmquist (0-2)		@ WSH	Carson Palmquist (0-2)
Sun, Jul 5th	@ WSH	Cade Cavalli (13-5)	#48	@ WSH	Cade Cavalli (13-5)	#48
Tue, Jul 7th	vs ATL	Hurston Waldrep (0-1)		vs ATL	Hurston Waldrep (0-1)
Wed, Jul 8th	vs ATL	Grant Holmes (10-5)	#148	vs ATL	Grant Holmes (10-5)	#148
Thu, Jul 9th	vs ATL	Bryce Elder (8-8)		vs ATL	Bryce Elder (8-8)
Sat, Jul 11th	vs MIL	Shane Drohan (7-5)	#70	vs MIL	Shane Drohan (7-5)	#70
Sun, Jul 12th	vs MIL	Robert Gasser (5-5)	#60	vs MIL	Robert Gasser (5-5)	#60
Sat, Jul 18th	@ CLE	Logan Allen (0-0)	#261	@ CLE	Logan Allen (0-0)	#261
Sun, Jul 19th	@ CLE	Joey Cantillo (10-9)	#58	@ CLE	Joey Cantillo (10-9)	#58
Mon, Jul 20th	@ NYY	Ryan Weathers (5-8)	#171	@ NYY	Ryan Weathers (5-8)	#171
Wed, Jul 22nd	@ NYY	Max Fried (5-5)	#13	@ NYY	Max Fried (5-5)	#13
Fri, Jul 24th	vs CHC	Matthew Boyd (9-5)	#50	vs CHC	Matthew Boyd (9-5)	#50
Sat, Jul 25th	vs CHC	Shota Imanaga (11-10)	#31	vs CHC	Shota Imanaga (11-10)	#31
Sun, Jul 26th	vs CHC	Jameson Taillon (2-6)		vs CHC	Jameson Taillon (2-6)
Mon, Jul 27th	vs ARI	Merrill Kelly (10-14)	#182	vs ARI	Merrill Kelly (10-14)	#182
Tue, Jul 28th	vs ARI	Brandon Pfaadt (7-3)	#112	vs ARI	Brandon Pfaadt (7-3)	#112
Wed, Jul 29th	vs ARI	Eduardo Rodriguez (15-7)	#86	vs ARI	Eduardo Rodriguez (15-7)	#86
Thu, Jul 30th	@ CIN	Rhett Lowder (6-12)	#293	@ CIN	Rhett Lowder (6-12)	#293
Fri, Jul 31st	@ CIN	Hunter Greene (2-2)		@ CIN	Hunter Greene (2-2)
Sat, Aug 1st	@ CIN	Andrew Abbott (6-11)	#131	@ CIN	Andrew Abbott (6-11)	#131
Sun, Aug 2nd	@ CIN	Chase Burns (15-3)		@ CIN	Chase Burns (15-3)
Mon, Aug 3rd	@ MIL	Brandon Sproat (3-7)	#317	@ MIL	Brandon Sproat (3-7)	#317
Tue, Aug 4th	@ MIL	Logan Henderson (11-3)	#28	@ MIL	Logan Henderson (11-3)	#28
Wed, Aug 5th	@ MIL	Kyle Harrison (10-5)	#66	@ MIL	Kyle Harrison (10-5)	#66
Thu, Aug 6th	@ MIL	Dustin May (7-9)	#42	@ MIL	Dustin May (7-9)	#42
Fri, Aug 7th	vs NYM	Zac Thornton (5-5)	#144	vs NYM	Zac Thornton (5-5)	#144
Sat, Aug 8th	vs NYM	Robert Stock (1-3)		vs NYM	Robert Stock (1-3)
Sun, Aug 9th	vs NYM	Sean Manaea (6-7)	#54	vs NYM	Sean Manaea (6-7)	#54
Tue, Aug 11th	@ MIA	Eury Perez (7-11)	#55	@ MIA	Eury Perez (7-11)	#55
Wed, Aug 12th	@ MIA	Janson Junk (6-9)	#77	@ MIA	Janson Junk (6-9)	#77
Thu, Aug 13th	@ MIA	Tyler Phillips (5-6)	#136	@ MIA	Tyler Phillips (5-6)	#136
Fri, Aug 14th	vs BOS	Jake Bennett (9-7)	#103	vs BOS	Jake Bennett (9-7)	#103
Sat, Aug 15th	vs BOS	Sonny Gray (18-5)	#32	vs BOS	Sonny Gray (18-5)	#32
Sun, Aug 16th	vs BOS	Patrick Sandoval (1-7)	#80	vs BOS	Patrick Sandoval (1-7)	#80
Mon, Aug 17th	vs DET	Framber Valdez (10-12)	#74	vs DET	Framber Valdez (10-12)	#74
Tue, Aug 18th	vs DET	Keider Montero (10-9)	#107	vs DET	Keider Montero (10-9)	#107
Wed, Aug 19th	vs DET	Jackson Jobe (2-3)	#154	vs DET	Jackson Jobe (2-3)	#154
Fri, Aug 21st	@ LAD	Yoshinobu Yamamoto (14-9)	#6	@ LAD	Yoshinobu Yamamoto (14-9)	#6
Sat, Aug 22nd	@ LAD	Tarik Skubal (11-7)	#1	@ LAD	Tarik Skubal (11-7)	#1
Sun, Aug 23rd	@ LAD	Blake Snell (4-1)	#23	@ LAD	Blake Snell (4-1)	#23
Mon, Aug 24th	@ SD	Robbie Ray (13-8)	#127	@ SD	Robbie Ray (13-8)	#127
Tue, Aug 25th	@ SD	Michael King (12-10)	#43	@ SD	Michael King (12-10)	#43
Wed, Aug 26th	@ SD	Randy Vasquez (10-6)	#280	@ SD	Randy Vasquez (10-6)	#280
Fri, Aug 28th	@ STL	Quinn Mathews (2-3)	#120	@ STL	Quinn Mathews (2-3)	#120
Sat, Aug 29th	@ STL	Kyle Leahy (10-5)	#64	@ STL	Kyle Leahy (10-5)	#64
Sun, Aug 30th	@ STL	Matthew Liberatore (6-14)	#90	@ STL	Matthew Liberatore (6-14)	#90
Tue, Sep 1st	vs SF	Logan Webb (8-9)		vs SF	Logan Webb (8-9)
Wed, Sep 2nd	vs SF	Landen Roupp (9-14)	#102	vs SF	Landen Roupp (9-14)	#102
Thu, Sep 3rd	vs SF	Blade Tidwell (1-2)	#297	vs SF	Blade Tidwell (1-2)	#297
Fri, Sep 4th	vs LAA	Ryan Johnson (5-9)	#158	vs LAA	Ryan Johnson (5-9)	#158
Sat, Sep 5th	vs LAA	Yusei Kikuchi (1-6)	#79	vs LAA	Yusei Kikuchi (1-6)	#79
Sun, Sep 6th	vs LAA	Walbert Urena (9-11)	#113	vs LAA	Walbert Urena (9-11)	#113
Tue, Sep 8th	@ CWS	Sean Burke (10-7)	#101	@ CWS	Sean Burke (10-7)	#101
Wed, Sep 9th	@ CWS	Davis Martin (9-7)	#96	@ CWS	Davis Martin (9-7)	#96
Thu, Sep 10th	@ CWS	Hagen Smith (3-3)	#150	@ CWS	Hagen Smith (3-3)	#150
Fri, Sep 11th	@ CHC	Shota Imanaga (11-10)	#31	@ CHC	Shota Imanaga (11-10)	#31
Sat, Sep 12th	@ CHC	Clay Holmes (6-8)	#82	@ CHC	Clay Holmes (6-8)	#82
Sun, Sep 13th	@ CHC	Matthew Boyd (9-5)	#50	@ CHC	Matthew Boyd (9-5)	#50
Tue, Sep 15th	vs MIL	Jacob Misiorowski (15-5)	#12	vs MIL	Jacob Misiorowski (15-5)	#12
Wed, Sep 16th	vs MIL	Logan Henderson (11-3)	#28	vs MIL	Logan Henderson (11-3)	#28
Thu, Sep 17th	vs MIL	Kyle Harrison (10-5)	#66	vs MIL	Kyle Harrison (10-5)	#66
Fri, Sep 18th	vs KC	Randy Dobnak (3-4)	#334	vs KC	Randy Dobnak (3-4)	#334
Sat, Sep 19th	vs KC	Noah Cameron (9-8)	#81	vs KC	Noah Cameron (9-8)	#81
Sun, Sep 20th	vs KC	Michael Wacha (9-9)	#97	vs KC	Michael Wacha (9-9)	#97
Tue, Sep 22nd	vs STL	Andre Pallante (12-8)	#94	vs STL	Andre Pallante (12-8)	#94
Wed, Sep 23rd	vs STL	Matthew Liberatore (6-14)	#90	vs STL	Matthew Liberatore (6-14)	#90
Thu, Sep 24th	vs STL	Kyle Leahy (10-5)	#64	vs STL	Kyle Leahy (10-5)	#64
Fri, Sep 25th	@ DET	Jackson Jobe (2-3)	#154	@ DET	Jackson Jobe (2-3)	#154
Sat, Sep 26th	@ DET	Justin Verlander (0-1)	#216	@ DET	Justin Verlander (0-1)	#216
Sun, Sep 27th	@ DET	River Ryan (0-0)	#100	@ DET	River Ryan (0-0)	#100

Who Should I Trade?

Isaac Mattson for Mason Montgomery (2026)

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