Who Should I Trade?

Isaac Mattson for Yerry De los Santos (2026)

Summary
Stats
Projections
News & Notes
Schedule

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

Rest of Season	# 392	‐
VBR	# 692	# 798

Projections

Strikeouts	12	7
Wins	1	0
Saves	0	0
ERA	4.16	3.76
WHIP	1.40	1.34

Misc

Injury Alert	-	MiLB

Expert Ranks

Kelly Kirby FantasyPros	# 421	# 430

Kevin Spinelli KevScores	# 418	‐

Who Should I Trade? Player Statistics
	Isaac Mattson RP - PIT	Yerry De los Santos RP - NYY
2026 Stats


Games Played	36	5

Games Started	0	0

Innings Pitched	34.2	8.2

Wins	0	0

Losses	0	0

Saves	0	0

Blown Saves	2	0

Holds	8	0

Hits Allowed	38	8

Earned Runs	19	1

Home Runs Allowed	3	1

Strikeouts	33	7

Walks	16	4

ERA	4.93	1.04

WHIP	1.56	1.38

Who Should I Trade? Player Projections
	Isaac Mattson RP - PIT	Yerry De los Santos RP - NYY
2026 Projections


Games Played	16	12

Games Started	0	0

Innings Pitched	13.4	9.0

Wins	1	0

Losses	1	0

Saves	0	0

Blown Saves	0	0

Holds	1	0

Hits Allowed	12	8

Earned Runs	6	4

Home Runs Allowed	2	1

Strikeouts	12	7

Walks	6	3

ERA	4.16	3.76

WHIP	1.40	1.34

Who Should I Trade? Player Notes
	Isaac Mattson RP - PIT	Yerry De los Santos RP - NYY
News
	The Pirates recalled RHP Isaac Mattson from Triple-A Indianapolis. Ari Koslow Sat, Aug 1st	The Yankees recalled Yerry De los Santos from Triple-A. Ari Koslow Mon, Jun 22nd
	The Pirates optioned RHP Isaac Mattson to Triple-A Indianapolis. Ari Koslow Wed, Jul 29th	The Yankees optioned RHP Yerry De los Santos to Triple-A Scranton/Wilkes-Barre. Ari Koslow Wed, Apr 15th
	The Pirates recalled RHP Isaac Mattson from Triple-A Indianapolis. Ari Koslow Sat, Jun 13th	De Los Santos posted a 3.28 ERA and 28:17 K:BB across 35.2 innings in 25 bullpen appearances with New York last season. Jake Bird was optioned to Triple-A Scranton/Wilkes-Barre following Monday's win over the Angels, opening the roster spot. Bruno Mulé Tue, Apr 14th
	Isaac Mattson has been sent to Triple-A Indianapolis. Nate Miller - FantasyPros Wed, May 20th	Righthander Yerry De los Santos has been optioned to Triple-A Scranton/Wilkes-Barre by the New York Yankees. David Leisering Fri, Mar 20th
	Isaac Mattson pitched a perfect eighth inning on Sunday, including a strikeout, for his fifth hold of the season as the Pirates defeated the Rays, 6-3. David Leisering Sun, Apr 19th
Notes
There are no recent notes for these players

Who Should I Trade? Player Schedules
Date	Opp	Opp Pitcher	VBR	Opp	Opp Pitcher	VBR
	Isaac Mattson RP - PIT			Yerry De los Santos RP - NYY
Thu, Mar 26th	@ NYM	Freddy Peralta (5-9)	#40
Sat, Mar 28th	@ NYM	David Peterson (6-7)	#89	@ SF	Tyler Mahle (3-9)	#78
Sun, Mar 29th	@ NYM	Nolan McLean (7-7)	#34
Mon, Mar 30th	@ CIN	Chase Burns (12-1)	#29	@ SEA	Luis Castillo (3-9)	#61
Tue, Mar 31st	@ CIN	Brandon Williamson (2-3)	#350	@ SEA	Logan Gilbert (8-6)	#10
Wed, Apr 1st	@ CIN	Andrew Abbott (5-7)	#106	@ SEA	George Kirby (8-9)	#21
Fri, Apr 3rd	vs BAL	Kyle Bradish (7-9)	#45	vs MIA	Eury Perez (5-8)	#41
Sat, Apr 4th	vs BAL	Shane Baz (4-10)	#70	vs MIA	Max Meyer (9-1)	#75
Sun, Apr 5th	vs BAL	Chris Bassitt (4-4)	#134	vs MIA	Pete Fairbanks
Mon, Apr 6th	vs SD	German Marquez (4-2)	#334
Tue, Apr 7th	vs SD	Nick Pivetta (1-2)	#101	vs ATH	Aaron Civale (5-7)	#202
Wed, Apr 8th	vs SD	Michael King (6-7)	#57	vs ATH	Luis Severino (2-6)	#231
Fri, Apr 10th	@ CHC	Shota Imanaga (7-9)	#23	@ TB	Steven Matz (4-4)	#186
Sat, Apr 11th	@ CHC	Edward Cabrera (5-4)	#76	@ TB	Nick Martinez (10-3)	#97
Sun, Apr 12th	@ CHC	Jameson Taillon (2-6)	#220	@ TB	Drew Rasmussen (10-5)	#20
Mon, Apr 13th	vs WSH	Cade Cavalli (8-4)	#54	vs LAA	Yusei Kikuchi (0-3)	#122
Tue, Apr 14th	vs WSH	PJ Poulin (3-0)	#290	vs LAA	Reid Detmers (3-7)	#33
Wed, Apr 15th	vs WSH	Jake Irvin (2-5)	#169	vs LAA	Jack Kochanowicz (2-5)
Thu, Apr 16th	vs WSH	Foster Griffin (12-3)	#56	vs LAA	Brent Suter (1-2)	#187
Fri, Apr 17th	vs TB	Nick Martinez (10-3)	#97	vs KC	Michael Wacha (5-8)	#73
Sat, Apr 18th	vs TB	Drew Rasmussen (10-5)	#20	vs KC	Noah Cameron (5-8)	#84
Sun, Apr 19th	vs TB	Shane McClanahan (9-6)	#49	vs KC	Cole Ragans (1-4)
Tue, Apr 21st	@ TEX	Kumar Rocker (4-8)	#79	@ BOS	Connelly Early (7-5)	#163
Wed, Apr 22nd	@ TEX	Jack Leiter (3-7)	#123	@ BOS	Ranger Suarez (4-3)	#22
Thu, Apr 23rd	@ TEX	Jacob deGrom (7-7)	#7	@ BOS	Payton Tolle (6-6)	#42
Fri, Apr 24th	@ MIL	Brandon Woodruff (2-2)		@ HOU	Lance McCullers Jr. (2-3)	#284
Sat, Apr 25th	@ MIL	Jacob Misiorowski (11-4)	#5	@ HOU	Mike Burrows (4-9)	#210
Sun, Apr 26th	@ MIL	Kyle Harrison (8-2)	#43	@ HOU	Spencer Arrighetti (7-5)	#282
Mon, Apr 27th	vs STL	Dustin May (5-7)	#55	@ TEX	Jack Leiter (3-7)	#123
Tue, Apr 28th	vs STL	Kyle Leahy (7-4)	#125	@ TEX	Jacob deGrom (7-7)	#7
Wed, Apr 29th	vs STL	Andre Pallante (11-6)	#109	@ TEX	Nathan Eovaldi (10-9)	#15
Thu, Apr 30th	vs STL	Hunter Dobbins (2-1)	#162
Fri, May 1st	vs CIN	Brady Singer (5-10)	#151	vs BAL	Cade Povich (1-1)	#218
Sat, May 2nd	vs CIN	Rhett Lowder (3-7)	#277	vs BAL	Kyle Bradish (7-9)	#45
Sun, May 3rd	vs CIN	Chase Burns (12-1)	#29	vs BAL	Trey Gibson (1-3)	#297
Tue, May 5th	@ ARI	Eduardo Rodriguez (10-3)	#128	vs TEX	Jacob deGrom (7-7)	#7
Wed, May 6th	@ ARI	Michael Soroka (8-3)	#67	vs TEX	Nathan Eovaldi (10-9)	#15
Thu, May 7th	@ ARI	Zac Gallen (3-9)	#172	vs TEX	MacKenzie Gore (6-9)	#35
Fri, May 8th	@ SF	Robbie Ray (10-6)	#96	@ MIL	Jacob Misiorowski (11-4)	#5
Sat, May 9th	@ SF	Landen Roupp (7-9)	#63	@ MIL	Kyle Harrison (8-2)	#43
Sun, May 10th	@ SF	Tyler Mahle (3-9)	#78	@ MIL	Logan Henderson (5-1)	#36
Tue, May 12th	vs COL	Michael Lorenzen (3-9)	#436	@ BAL	Trevor Rogers (6-7)	#66
Wed, May 13th	vs COL	Jose Quintana (2-3)	#433	@ BAL	Kyle Bradish (7-9)	#45
Thu, May 14th	vs COL	Chase Dollander (3-3)
Fri, May 15th	vs PHI	Aaron Nola (3-9)	#59	@ NYM	Clay Holmes (4-4)	#121
Sat, May 16th	vs PHI	Cristopher Sanchez (14-4)	#3	@ NYM	Huascar Brazoban (5-2)	#184
Sun, May 17th	vs PHI	Zack Wheeler (10-2)	#6	@ NYM	Freddy Peralta (5-9)	#40
Tue, May 19th	@ STL	Matthew Liberatore (5-8)	#118	vs TOR	Dylan Cease (7-5)	#9
Wed, May 20th	@ STL	Michael McGreevy (4-9)	#95	vs TOR	Trey Yesavage (5-5)	#68
Thu, May 21st	@ STL	Dustin May (5-7)	#55	vs TOR	Braydon Fisher (3-3)	#183
Fri, May 22nd	@ TOR	Kevin Gausman (5-10)	#27	vs TB	Nick Martinez (10-3)	#97
Sat, May 23rd	@ TOR	Patrick Corbin (3-4)	#300
Sun, May 24th	@ TOR	Dylan Cease (7-5)	#9	vs TB	Drew Rasmussen (10-5)	#20
Mon, May 25th	vs CHC	Ben Brown (4-2)	#93	@ KC	Michael Wacha (5-8)	#73
Tue, May 26th	vs CHC	Jordan Wicks (0-2)	#226	@ KC	Bailey Falter (0-2)
Wed, May 27th	vs CHC	Jameson Taillon (2-6)	#220	@ KC	Noah Cameron (5-8)	#84
Thu, May 28th	vs CHC	Colin Rea (8-7)	#176
Fri, May 29th	vs MIN	Taj Bradley (9-4)	#51	@ ATH	Luis Severino (2-6)	#231
Sat, May 30th	vs MIN	Bailey Ober (7-3)	#90	@ ATH	J.T. Ginn (8-6)	#160
Sun, May 31st	vs MIN	Zebby Matthews (4-8)	#131	@ ATH	Jacob Lopez (5-4)	#185
Tue, Jun 2nd	@ HOU	Mike Burrows (4-9)	#210	vs CLE	Joey Cantillo (8-6)	#88
Wed, Jun 3rd	@ HOU	Spencer Arrighetti (7-5)	#282	vs CLE	Gavin Williams (10-6)	#24
Thu, Jun 4th	@ HOU	Kai-Wei Teng (5-6)	#261	vs CLE	Slade Cecconi (4-7)	#135
Fri, Jun 5th	@ ATL	Martin Perez (7-6)	#216	vs BOS	Sonny Gray (13-2)	#28
Sat, Jun 6th	@ ATL	Spencer Strider (4-2)	#267
Sun, Jun 7th	@ ATL	Bryce Elder (7-6)	#136	vs BOS	Ranger Suarez (4-3)	#22
Tue, Jun 9th	vs LAD	Eric Lauer (6-5)	#347	@ CLE	Slade Cecconi (4-7)	#135
Wed, Jun 10th	vs LAD	Shohei Ohtani (8-2)	#1	@ CLE	Parker Messick (8-6)	#44
Thu, Jun 11th	vs LAD	Justin Wrobleski (11-2)	#80
Fri, Jun 12th	vs MIA	Sandy Alcantara (11-6)	#60	@ TOR	Trey Yesavage (5-5)	#68
Sat, Jun 13th	vs MIA	Lake Bachar (1-2)	#194	@ TOR	Kevin Gausman (5-10)	#27
Sun, Jun 14th	vs MIA	Max Meyer (9-1)	#75	@ TOR	Patrick Corbin (3-4)	#300
Mon, Jun 15th	@ ATH	J.T. Ginn (8-6)	#160
Tue, Jun 16th	@ ATH	Jack Perkins (2-7)	#98	vs CWS	Davis Martin (9-5)	#81
Wed, Jun 17th	@ ATH	Aaron Civale (5-7)	#202	vs CWS	Anthony Kay (7-5)	#182
Fri, Jun 19th	@ COL	Kyle Freeland (2-10)	#394	vs CIN	Rhett Lowder (3-7)	#277
Sat, Jun 20th	@ COL	Tomoyuki Sugano (11-4)	#437	vs CIN	Andrew Abbott (5-7)	#106
Sun, Jun 21st	@ COL	Michael Lorenzen (3-9)	#436	vs CIN	Chase Burns (12-1)	#29
Tue, Jun 23rd	vs SEA	George Kirby (8-9)	#21	@ DET	Casey Mize (4-6)	#38
Wed, Jun 24th	vs SEA	Bryan Woo (7-8)	#13	@ DET	Tarik Skubal (7-5)	#2
Thu, Jun 25th	vs SEA	Bryce Miller (4-5)	#39	@ BOS	Connelly Early (7-5)	#163
Fri, Jun 26th	vs CIN	Andrew Abbott (5-7)	#106	@ BOS	Payton Tolle (6-6)	#42
Sat, Jun 27th	vs CIN	Chase Burns (12-1)	#29	@ BOS	Jake Bennett (6-4)	#83
Sun, Jun 28th	vs CIN	Brady Singer (5-10)	#151	@ BOS	Sonny Gray (13-2)	#28
Mon, Jun 29th	@ PHI	Aaron Nola (3-9)	#59	vs DET	Casey Mize (4-6)	#38
Tue, Jun 30th	@ PHI	Cristopher Sanchez (14-4)	#3	vs DET	Tarik Skubal (7-5)	#2
Wed, Jul 1st	@ PHI	Zack Wheeler (10-2)	#6	vs DET	Troy Melton (6-1)	#86
Thu, Jul 2nd	@ PHI	Alan Rangel (0-3)	#303
Fri, Jul 3rd	@ WSH	Foster Griffin (12-3)	#56	vs MIN	Mike Paredes (0-3)	#403
Sat, Jul 4th	@ WSH	Carson Palmquist (0-1)	#306	vs MIN	Zebby Matthews (4-8)	#131
Sun, Jul 5th	@ WSH	Cade Cavalli (8-4)	#54	vs MIN	Joe Ryan (6-7)	#19
Tue, Jul 7th	vs ATL	Hurston Waldrep (0-1)	#322	@ TB	Ian Seymour (7-3)	#85
Wed, Jul 8th	vs ATL	Grant Holmes (6-4)	#144	@ TB	Shane McClanahan (9-6)	#49
Thu, Jul 9th	vs ATL	Bryce Elder (7-6)	#136	@ TB	Drew Rasmussen (10-5)	#20
Sat, Jul 11th	vs MIL	Shane Drohan (6-4)	#72	@ WSH	PJ Poulin (3-0)	#290
Sun, Jul 12th	vs MIL	Robert Gasser (3-4)	#115	@ WSH	Cade Cavalli (8-4)	#54
Sat, Jul 18th	@ CLE	Logan Allen (0-0)	#154
Sun, Jul 19th	@ CLE	Joey Cantillo (8-6)	#88	vs LAD	Will Klein (3-4)	#189
Mon, Jul 20th	@ NYY	Ryan Weathers (4-7)	#71	vs PIT	Braxton Ashcraft (11-4)	#31
Wed, Jul 22nd	@ NYY	Max Fried (4-3)	#16	vs PIT	Bubba Chandler (3-8)	#103
Fri, Jul 24th	vs CHC	Matthew Boyd (6-1)	#37	@ PHI	Jesus Luzardo (9-5)	#11
Sat, Jul 25th	vs CHC	Shota Imanaga (7-9)	#23	@ PHI	Tim Mayza (2-3)	#167
Sun, Jul 26th	vs CHC	Jameson Taillon (2-6)	#220	@ PHI	Cristopher Sanchez (14-4)	#3
Mon, Jul 27th	vs ARI	Merrill Kelly (8-8)	#124	@ CWS	Noah Schultz (3-8)	#209
Tue, Jul 28th	vs ARI	Brandon Pfaadt (5-1)	#77	@ CWS	Anthony Kay (7-5)	#182
Wed, Jul 29th	vs ARI	Eduardo Rodriguez (10-3)	#128	@ CWS	Davis Martin (9-5)	#81
Thu, Jul 30th	@ CIN	Rhett Lowder (3-7)	#277	@ CWS	Sean Burke (7-5)	#64
Fri, Jul 31st	@ CIN	Hunter Greene (2-2)	#26	@ CHC	Shota Imanaga (7-9)	#23
Sat, Aug 1st	@ CIN	Andrew Abbott (5-7)	#106	@ CHC	David Peterson (6-7)	#89
Sun, Aug 2nd	@ CIN	Chase Burns (12-1)	#29	@ CHC	Colin Rea (8-7)	#176
Mon, Aug 3rd	@ MIL	Brandon Sproat (3-6)	#141	vs STL	Michael McGreevy (4-9)	#95
Tue, Aug 4th	@ MIL	Logan Henderson (5-1)	#36	vs STL	Dustin May (5-7)	#55
Wed, Aug 5th	@ MIL	Shane Drohan (6-4)	#72	vs STL	Andre Pallante (11-6)	#109
Thu, Aug 6th	@ MIL	Robert Gasser (3-4)	#115
Fri, Aug 7th	vs NYM	Freddy Peralta (5-9)	#40	vs ATL	Reynaldo Lopez (4-3)	#82
Sat, Aug 8th	vs NYM	Zac Thornton (2-2)	#143	vs ATL	Martin Perez (7-6)	#216
Sun, Aug 9th	vs NYM	Christian Scott (3-3)	#50	vs ATL	Chris Sale (12-6)	#8
Tue, Aug 11th	@ MIA			vs SEA
Wed, Aug 12th	@ MIA			vs SEA
Thu, Aug 13th	@ MIA			vs SEA
Fri, Aug 14th	vs BOS			@ TOR
Sat, Aug 15th	vs BOS			@ TOR
Sun, Aug 16th	vs BOS			@ TOR
Mon, Aug 17th	vs DET
Tue, Aug 18th	vs DET			@ BAL
Wed, Aug 19th	vs DET			@ BAL
Fri, Aug 21st	@ LAD			vs TOR
Sat, Aug 22nd	@ LAD			vs TOR
Sun, Aug 23rd	@ LAD			vs TOR
Mon, Aug 24th	@ SD
Tue, Aug 25th	@ SD			vs HOU
Wed, Aug 26th	@ SD			vs HOU
Fri, Aug 28th	@ STL			vs BOS
Sat, Aug 29th	@ STL			vs BOS
Sun, Aug 30th	@ STL			vs BOS
Tue, Sep 1st	vs SF			@ LAA
Wed, Sep 2nd	vs SF			@ LAA
Thu, Sep 3rd	vs SF
Fri, Sep 4th	vs LAA			@ SD
Sat, Sep 5th	vs LAA			@ SD
Sun, Sep 6th	vs LAA			@ SD
Tue, Sep 8th	@ CWS			vs COL
Wed, Sep 9th	@ CWS			vs COL
Thu, Sep 10th	@ CWS			vs COL
Fri, Sep 11th	@ CHC			vs NYM
Sat, Sep 12th	@ CHC			vs NYM
Sun, Sep 13th	@ CHC			vs NYM
Tue, Sep 15th	vs MIL			@ MIN
Wed, Sep 16th	vs MIL			@ MIN
Thu, Sep 17th	vs MIL
Fri, Sep 18th	vs KC			@ ARI
Sat, Sep 19th	vs KC			@ ARI
Sun, Sep 20th	vs KC			@ ARI
Tue, Sep 22nd	vs STL			vs TB
Wed, Sep 23rd	vs STL			vs TB
Thu, Sep 24th	vs STL			vs TB
Fri, Sep 25th	@ DET			vs BAL
Sat, Sep 26th	@ DET			vs BAL
Sun, Sep 27th	@ DET			vs BAL
Wed, Mar 25th				@ SF	Logan Webb (6-7)	#18
Fri, Mar 27th				@ SF	Robbie Ray (10-6)	#96
Thu, Apr 9th				vs ATH	Jeffrey Springs (3-11)	#246
Mon, May 4th				vs BAL	Shane Baz (4-10)	#70
Mon, May 11th				@ BAL	Brandon Young (8-2)	#140
Mon, May 18th				vs TOR	Patrick Corbin (3-4)	#300
Mon, Jun 8th				@ CLE	Gavin Williams (10-6)	#24
Thu, Jun 18th				vs CWS	Bryan Hudson (3-4)	#170
Mon, Jun 22nd				@ DET	Framber Valdez (6-7)	#32
Mon, Jul 6th				@ TB	Griffin Jax (6-8)	#58
Fri, Jul 10th				@ WSH	Carson Palmquist (0-1)	#306
Fri, Jul 17th				vs LAD	Roki Sasaki (5-5)	#92
Thu, Aug 20th				@ BAL
Thu, Aug 27th				vs HOU
Mon, Aug 31st				@ LAA
Mon, Sep 14th				@ MIN

Who Should I Trade?

Isaac Mattson for Yerry De los Santos (2026)

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