Who Should I Trade?

Gregory Santos for Isaac Mattson (2026)

Summary
Stats
Projections
News & Notes
Schedule

Who Should I Trade? Player Summaries
	Experts' Pick
	Isaac Mattson RP - PIT	Gregory Santos RP - FA
Expert Recommendation	100% Recommended by 2 of 2 experts	0% Recommended by 0 of 2 experts
Rankings

Rest of Season	# 392	‐
VBR	# 659	‐

Projections

Strikeouts	3	‐
Wins	0	‐
Saves	0	‐
ERA	3.52	‐
WHIP	1.34	‐

Misc

Injury Alert	IL15	FA

Expert Ranks

Kelly Kirby FantasyPros	# 427	‐

Kevin Spinelli KevScores	# 418	‐

Who Should I Trade? Player Statistics
	Isaac Mattson RP - PIT	Gregory Santos RP - FA
2026 Stats


Games Played	38	3

Games Started	0	0

Innings Pitched	38.2	5.0

Wins	0	0

Losses	0	0

Saves	0	0

Blown Saves	2	0

Holds	8	0

Hits Allowed	44	5

Earned Runs	23	2

Home Runs Allowed	3	0

Strikeouts	36	1

Walks	18	3

ERA	5.35	3.60

WHIP	1.60	1.60

Who Should I Trade? Player Projections
	Isaac Mattson RP - PIT	Gregory Santos RP - FA
2026 Projections


Games Played	3	‐

Games Started	0	‐

Innings Pitched	2.8	‐

Wins	0	‐

Losses	0	‐

Saves	0	‐

Blown Saves	0	‐

Holds	0	‐

Hits Allowed	3	‐

Earned Runs	1	‐

Home Runs Allowed	0	‐

Strikeouts	3	‐

Walks	1	‐

ERA	3.52	‐

WHIP	1.34	‐

Who Should I Trade? Player Notes
	Isaac Mattson RP - PIT	Gregory Santos RP - FA
News
	The Pirates placed RHP Isaac Mattson on the 15-day injured list with hip inflammation. Ari Koslow Tue, Sep 8th	Reliever Gregory Santos has cleared waivers and has declared free agency in lieu of an outright assignment to the minors. Brenton Kemp Wed, Jul 8th
	The Pirates recalled RHP Isaac Mattson from Triple-A Indianapolis. Ari Koslow Fri, Sep 4th	Gregory Santos will miss 2-3 weeks with a right adductor strain. Ari Koslow Wed, Jun 3rd
	The Pirates optioned Isaac Mattson to Triple-A Indianapolis. Ari Koslow Tue, Aug 18th	The Giants optioned RHP Gregory Santos to Triple-A Sacramento. Ari Koslow Sun, May 10th
	The Pirates recalled RHP Isaac Mattson from Triple-A Indianapolis. Ari Koslow Thu, Aug 13th	The Giants recalled Gregory Santos from Triple-A. Ari Koslow Wed, Apr 29th
	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
	Isaac Mattson RP - PIT			Gregory Santos RP - FA
Thu, Mar 26th	@ NYM	Freddy Peralta (9-11)	#52
Sat, Mar 28th	@ NYM	David Peterson (7-8)	#101
Sun, Mar 29th	@ NYM	Nolan McLean (11-9)	#33
Mon, Mar 30th	@ CIN	Chase Burns (15-3)	#31
Tue, Mar 31st	@ CIN	Brandon Williamson (4-4)	#399
Wed, Apr 1st	@ CIN	Andrew Abbott (6-11)	#128
Fri, Apr 3rd	vs BAL	Kyle Bradish (7-14)	#61
Sat, Apr 4th	vs BAL	Shane Baz (6-15)	#69
Sun, Apr 5th	vs BAL	Chris Bassitt (7-5)	#143
Mon, Apr 6th	vs SD	German Marquez (4-2)	#369
Tue, Apr 7th	vs SD	Nick Pivetta (2-2)	#32
Wed, Apr 8th	vs SD	Michael King (11-9)	#60
Fri, Apr 10th	@ CHC	Shota Imanaga (10-10)	#30
Sat, Apr 11th	@ CHC	Edward Cabrera (5-5)	#258
Sun, Apr 12th	@ CHC	Jameson Taillon (2-6)
Mon, Apr 13th	vs WSH	Cade Cavalli (12-5)	#36
Tue, Apr 14th	vs WSH	PJ Poulin (3-0)
Wed, Apr 15th	vs WSH	Jake Irvin (2-9)	#149
Thu, Apr 16th	vs WSH	Foster Griffin (15-5)	#57
Fri, Apr 17th	vs TB	Nick Martinez (14-4)	#90
Sat, Apr 18th	vs TB	Drew Rasmussen (14-5)	#14
Sun, Apr 19th	vs TB	Shane McClanahan (10-7)	#152
Tue, Apr 21st	@ TEX	Kumar Rocker (5-11)	#117
Wed, Apr 22nd	@ TEX	Jack Leiter (3-7)	#230
Thu, Apr 23rd	@ TEX	Jacob deGrom (10-9)	#3
Fri, Apr 24th	@ MIL	Brandon Woodruff (2-2)
Sat, Apr 25th	@ MIL	Jacob Misiorowski (14-5)	#7
Sun, Apr 26th	@ MIL	Kyle Harrison (10-4)	#62
Mon, Apr 27th	vs STL	Dustin May (7-9)	#51
Tue, Apr 28th	vs STL	Kyle Leahy (10-4)	#71
Wed, Apr 29th	vs STL	Andre Pallante (12-6)	#92
Thu, Apr 30th	vs STL	Hunter Dobbins (3-3)
Fri, May 1st	vs CIN	Brady Singer (6-14)	#155
Sat, May 2nd	vs CIN	Rhett Lowder (6-10)	#227
Sun, May 3rd	vs CIN	Chase Burns (15-3)	#31
Tue, May 5th	@ ARI	Eduardo Rodriguez (15-6)	#114
Wed, May 6th	@ ARI	Michael Soroka (8-5)	#78
Thu, May 7th	@ ARI	Zac Gallen (3-9)	#118
Fri, May 8th	@ SF	Robbie Ray (12-8)	#105
Sat, May 9th	@ SF	Landen Roupp (9-13)	#100
Sun, May 10th	@ SF	Tyler Mahle (6-10)	#58
Tue, May 12th	vs COL	Michael Lorenzen (3-12)	#119
Wed, May 13th	vs COL	Jose Quintana (2-3)	#401
Thu, May 14th	vs COL	Chase Dollander (3-3)
Fri, May 15th	vs PHI	Aaron Nola (6-10)	#50
Sat, May 16th	vs PHI	Cristopher Sanchez (17-5)	#5
Sun, May 17th	vs PHI	Zack Wheeler (12-5)	#9
Tue, May 19th	@ STL	Matthew Liberatore (5-14)	#83
Wed, May 20th	@ STL	Michael McGreevy (7-9)	#110
Thu, May 21st	@ STL	Dustin May (7-9)	#51
Fri, May 22nd	@ TOR	Kevin Gausman (9-12)	#26
Sat, May 23rd	@ TOR	Patrick Corbin (3-4)
Sun, May 24th	@ TOR	Dylan Cease (11-5)	#4
Mon, May 25th	vs CHC	Ben Brown (4-2)
Tue, May 26th	vs CHC	Jordan Wicks (0-2)	#287
Wed, May 27th	vs CHC	Jameson Taillon (2-6)
Thu, May 28th	vs CHC	Colin Rea (8-8)	#174
Fri, May 29th	vs MIN	Taj Bradley (11-6)	#40
Sat, May 30th	vs MIN	Bailey Ober (7-5)	#87
Sun, May 31st	vs MIN	Zebby Matthews (9-10)	#85
Tue, Jun 2nd	@ HOU	Mike Burrows (4-9)	#229
Wed, Jun 3rd	@ HOU	Spencer Arrighetti (8-9)	#140
Thu, Jun 4th	@ HOU	Kai-Wei Teng (5-7)	#309
Fri, Jun 5th	@ ATL	Martin Perez (8-9)	#154
Sat, Jun 6th	@ ATL	Spencer Strider (4-2)
Sun, Jun 7th	@ ATL	Bryce Elder (8-8)
Tue, Jun 9th	vs LAD	Eric Lauer (8-7)	#314
Wed, Jun 10th	vs LAD	Shohei Ohtani (8-2)	#16
Thu, Jun 11th	vs LAD	Justin Wrobleski (11-5)	#164
Fri, Jun 12th	vs MIA	Sandy Alcantara (13-10)	#88
Sat, Jun 13th	vs MIA	Lake Bachar (1-3)	#181
Sun, Jun 14th	vs MIA	Max Meyer (9-1)
Mon, Jun 15th	@ ATH	J.T. Ginn (9-8)
Tue, Jun 16th	@ ATH	Jack Perkins (3-11)	#135
Wed, Jun 17th	@ ATH	Aaron Civale (6-7)	#205
Fri, Jun 19th	@ COL	Kyle Freeland (4-10)	#392
Sat, Jun 20th	@ COL	Tomoyuki Sugano (12-9)	#402
Sun, Jun 21st	@ COL	Michael Lorenzen (3-12)	#119
Tue, Jun 23rd	vs SEA	George Kirby (9-11)	#28
Wed, Jun 24th	vs SEA	Bryan Woo (12-9)	#11
Thu, Jun 25th	vs SEA	Bryce Miller (4-9)	#44
Fri, Jun 26th	vs CIN	Andrew Abbott (6-11)	#128
Sat, Jun 27th	vs CIN	Chase Burns (15-3)	#31
Sun, Jun 28th	vs CIN	Brady Singer (6-14)	#155
Mon, Jun 29th	@ PHI	Aaron Nola (6-10)	#50
Tue, Jun 30th	@ PHI	Cristopher Sanchez (17-5)	#5
Wed, Jul 1st	@ PHI	Zack Wheeler (12-5)	#9
Thu, Jul 2nd	@ PHI	Alan Rangel (0-3)	#283
Fri, Jul 3rd	@ WSH	Foster Griffin (15-5)	#57
Sat, Jul 4th	@ WSH	Carson Palmquist (0-2)	#305
Sun, Jul 5th	@ WSH	Cade Cavalli (12-5)	#36
Tue, Jul 7th	vs ATL	Hurston Waldrep (0-1)
Wed, Jul 8th	vs ATL	Grant Holmes (9-5)	#157
Thu, Jul 9th	vs ATL	Bryce Elder (8-8)
Sat, Jul 11th	vs MIL	Shane Drohan (7-5)	#79
Sun, Jul 12th	vs MIL	Robert Gasser (4-5)	#93
Sat, Jul 18th	@ CLE	Logan Allen (0-0)	#268
Sun, Jul 19th	@ CLE	Joey Cantillo (9-9)	#66
Mon, Jul 20th	@ NYY	Ryan Weathers (5-8)	#187
Wed, Jul 22nd	@ NYY	Max Fried (4-4)	#17
Fri, Jul 24th	vs CHC	Matthew Boyd (8-5)	#59
Sat, Jul 25th	vs CHC	Shota Imanaga (10-10)	#30
Sun, Jul 26th	vs CHC	Jameson Taillon (2-6)
Mon, Jul 27th	vs ARI	Merrill Kelly (9-13)	#131
Tue, Jul 28th	vs ARI	Brandon Pfaadt (7-3)	#115
Wed, Jul 29th	vs ARI	Eduardo Rodriguez (15-6)	#114
Thu, Jul 30th	@ CIN	Rhett Lowder (6-10)	#227
Fri, Jul 31st	@ CIN	Hunter Greene (2-2)
Sat, Aug 1st	@ CIN	Andrew Abbott (6-11)	#128
Sun, Aug 2nd	@ CIN	Chase Burns (15-3)	#31
Mon, Aug 3rd	@ MIL	Brandon Sproat (3-7)	#220
Tue, Aug 4th	@ MIL	Logan Henderson (10-3)	#23
Wed, Aug 5th	@ MIL	Kyle Harrison (10-4)	#62
Thu, Aug 6th	@ MIL	Dustin May (7-9)	#51
Fri, Aug 7th	vs NYM	Zac Thornton (4-5)	#123
Sat, Aug 8th	vs NYM	Robert Stock (1-3)	#348
Sun, Aug 9th	vs NYM	Sean Manaea (5-7)	#67
Tue, Aug 11th	@ MIA	Eury Perez (7-11)	#45
Wed, Aug 12th	@ MIA	Janson Junk (6-9)	#99
Thu, Aug 13th	@ MIA	Tyler Phillips (5-6)	#159
Fri, Aug 14th	vs BOS	Jake Bennett (9-7)	#72
Sat, Aug 15th	vs BOS	Sonny Gray (17-5)	#37
Sun, Aug 16th	vs BOS	Patrick Sandoval (1-5)	#111
Mon, Aug 17th	vs DET	Framber Valdez (10-10)	#46
Tue, Aug 18th	vs DET	Keider Montero (9-8)	#134
Wed, Aug 19th	vs DET	Jackson Jobe (2-2)	#148
Fri, Aug 21st	@ LAD	Yoshinobu Yamamoto (13-8)	#8
Sat, Aug 22nd	@ LAD	Tarik Skubal (9-7)	#1
Sun, Aug 23rd	@ LAD	Blake Snell (4-1)	#10
Mon, Aug 24th	@ SD	Robbie Ray (12-8)	#105
Tue, Aug 25th	@ SD	Michael King (11-9)	#60
Wed, Aug 26th	@ SD	Randy Vasquez (10-6)	#163
Fri, Aug 28th	@ STL	Quinn Mathews (1-3)	#136
Sat, Aug 29th	@ STL	Kyle Leahy (10-4)	#71
Sun, Aug 30th	@ STL	Matthew Liberatore (5-14)	#83
Tue, Sep 1st	vs SF	Logan Webb (8-9)	#20
Wed, Sep 2nd	vs SF	Landen Roupp (9-13)	#100
Thu, Sep 3rd	vs SF	Blade Tidwell (0-2)	#170
Fri, Sep 4th	vs LAA	Ryan Johnson (4-8)	#177
Sat, Sep 5th	vs LAA	Yusei Kikuchi (1-5)	#68
Sun, Sep 6th	vs LAA	Walbert Urena (9-10)	#150
Tue, Sep 8th	@ CWS	Sean Burke (8-7)	#82
Wed, Sep 9th	@ CWS	Davis Martin (9-7)	#96
Thu, Sep 10th	@ CWS	Hagen Smith (3-1)	#194
Fri, Sep 11th	@ CHC	Shota Imanaga (10-10)	#30
Sat, Sep 12th	@ CHC	Clay Holmes (6-7)	#63
Sun, Sep 13th	@ CHC	Matthew Boyd (8-5)	#59
Tue, Sep 15th	vs MIL
Wed, Sep 16th	vs MIL	Jacob Misiorowski (14-5)	#7
Thu, Sep 17th	vs MIL	Logan Henderson (10-3)	#23
Fri, Sep 18th	vs KC	Randy Dobnak (3-4)	#391
Sat, Sep 19th	vs KC	Noah Cameron (9-8)	#65
Sun, Sep 20th	vs KC	Michael Wacha (9-8)	#70
Tue, Sep 22nd	vs STL	Andre Pallante (12-6)	#92
Wed, Sep 23rd	vs STL
Thu, Sep 24th	vs STL
Fri, Sep 25th	@ DET
Sat, Sep 26th	@ DET
Sun, Sep 27th	@ DET

Who Should I Trade?

Gregory Santos for Isaac Mattson (2026)

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