Who Should I Trade?

Blake Walston for Isaac Mattson (2026)

Summary
Stats
Projections
News & Notes
Schedule

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

Rest of Season	# 391	‐
VBR	# 743	‐

Projections

Strikeouts	11	‐
Wins	1	‐
Saves	0	‐
ERA	4.40	‐
WHIP	1.44	‐

Misc

Injury Alert	MiLB	IL60

Expert Ranks

Kelly Kirby FantasyPros	# 422	‐

Kevin Spinelli KevScores	# 418	‐

Who Should I Trade? Player Statistics
	Isaac Mattson RP - PIT	Blake Walston RP - ARI
2026 Stats


Games Played	36	‐

Games Started	0	‐

Innings Pitched	34.2	‐

Wins	0	‐

Losses	0	‐

Saves	0	‐

Blown Saves	2	‐

Holds	8	‐

Hits Allowed	38	‐

Earned Runs	19	‐

Home Runs Allowed	3	‐

Strikeouts	33	‐

Walks	16	‐

ERA	4.93	‐

WHIP	1.56	‐

Who Should I Trade? Player Projections
	Isaac Mattson RP - PIT	Blake Walston RP - ARI
2026 Projections


Games Played	15	‐

Games Started	0	‐

Innings Pitched	11.9	‐

Wins	1	‐

Losses	1	‐

Saves	0	‐

Blown Saves	0	‐

Holds	1	‐

Hits Allowed	11	‐

Earned Runs	6	‐

Home Runs Allowed	2	‐

Strikeouts	11	‐

Walks	6	‐

ERA	4.40	‐

WHIP	1.44	‐

Who Should I Trade? Player Notes
	Isaac Mattson RP - PIT	Blake Walston RP - ARI
News
	The Pirates optioned RHP Isaac Mattson to Triple-A Indianapolis. Ari Koslow Sun, Aug 2nd	The Diamondbacks placed LHP Blake Walston on the 60-day injured list following UCL surgery. Ari Koslow Wed, Mar 25th
	The Pirates recalled RHP Isaac Mattson from Triple-A Indianapolis. Ari Koslow Sat, Aug 1st
	The Pirates optioned RHP Isaac Mattson to Triple-A Indianapolis. Ari Koslow Wed, Jul 29th
	The Pirates recalled RHP Isaac Mattson from Triple-A Indianapolis. Ari Koslow Sat, Jun 13th
	Isaac Mattson has been sent to Triple-A Indianapolis. Nate Miller - FantasyPros Wed, May 20th
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			Blake Walston RP - ARI
Thu, Mar 26th	@ NYM	Freddy Peralta (5-9)	#50	@ LAD	Yoshinobu Yamamoto (11-7)	#13
Fri, Mar 27th				@ LAD	Emmet Sheehan (4-8)	#77
Sat, Mar 28th	@ NYM	David Peterson (6-7)	#88	@ LAD	Tyler Glasnow (3-0)	#60
Mon, Mar 30th	@ CIN	Chase Burns (13-1)	#26	vs DET	Justin Verlander (0-1)	#229
Tue, Mar 31st	@ CIN	Brandon Williamson (2-3)	#327	vs DET	Casey Mize (4-6)	#37
Wed, Apr 1st	@ CIN	Andrew Abbott (5-7)	#109	vs DET	Tarik Skubal (7-5)	#2
Thu, Apr 2nd				vs ATL	Reynaldo Lopez (4-3)	#112
Fri, Apr 3rd	vs BAL	Kyle Bradish (7-10)	#43	vs ATL	Grant Holmes (6-4)	#180
Sat, Apr 4th	vs BAL	Shane Baz (4-10)	#63	vs ATL	Bryce Elder (7-6)	#139
Sun, Apr 5th	vs BAL	Chris Bassitt (4-4)	#135	vs ATL	Martin Perez (7-6)	#204
Tue, Apr 7th	vs SD	Nick Pivetta (1-2)	#74	@ NYM	Freddy Peralta (5-9)	#50
Wed, Apr 8th	vs SD	Michael King (6-8)	#57	@ NYM	David Peterson (6-7)	#88
Thu, Apr 9th				@ NYM	Nolan McLean (7-7)	#34
Fri, Apr 10th	@ CHC	Shota Imanaga (7-9)	#28	@ PHI	Jesus Luzardo (9-5)	#10
Sat, Apr 11th	@ CHC	Edward Cabrera (5-4)	#80	@ PHI	Taijuan Walker (1-4)
Sun, Apr 12th	@ CHC	Jameson Taillon (2-6)	#145	@ PHI	Zach Pop
Mon, Apr 13th	vs WSH	Cade Cavalli (8-5)	#54	@ BAL	Dean Kremer (1-4)	#114
Tue, Apr 14th	vs WSH	PJ Poulin (3-0)	#350	@ BAL	Trevor Rogers (6-7)	#70
Wed, Apr 15th	vs WSH	Jake Irvin (2-5)	#164	@ BAL	Kyle Bradish (7-10)	#43
Fri, Apr 17th	vs TB	Nick Martinez (10-3)	#99	vs TOR	Braydon Fisher (3-3)	#178
Sat, Apr 18th	vs TB	Drew Rasmussen (10-5)	#17	vs TOR	Max Scherzer (1-4)	#144
Sun, Apr 19th	vs TB	Shane McClanahan (9-6)	#68	vs TOR	Kevin Gausman (5-10)	#25
Tue, Apr 21st	@ TEX	Kumar Rocker (4-8)	#81	vs CWS	Sean Burke (7-5)	#66
Wed, Apr 22nd	@ TEX	Jack Leiter (3-7)	#126	vs CWS	Anthony Kay (8-5)	#179
Thu, Apr 23rd	@ TEX	Jacob deGrom (7-7)	#11	vs CWS	Davis Martin (9-5)	#82
Sat, Apr 25th	@ MIL	Jacob Misiorowski (11-5)	#5	vs SD	German Marquez (4-2)	#381
Sun, Apr 26th	@ MIL	Kyle Harrison (8-2)	#44	vs SD	Michael King (6-8)	#57
Tue, Apr 28th	vs STL	Kyle Leahy (7-4)	#123	@ MIL	Chad Patrick (6-4)	#120
Wed, Apr 29th	vs STL	Andre Pallante (11-6)	#111	@ MIL	Brandon Sproat (3-7)	#151
Thu, Apr 30th	vs STL	Hunter Dobbins (2-1)	#166	@ MIL	Brandon Woodruff (2-2)
Fri, May 1st	vs CIN	Brady Singer (5-10)	#152	@ CHC	Colin Rea (8-8)	#169
Sat, May 2nd	vs CIN	Rhett Lowder (3-7)	#280	@ CHC	Shota Imanaga (7-9)	#28
Sun, May 3rd	vs CIN	Chase Burns (13-1)	#26	@ CHC	Matthew Boyd (7-1)	#38
Tue, May 5th	@ ARI	Eduardo Rodriguez (10-3)	#127	vs PIT	Bubba Chandler (4-8)	#102
Wed, May 6th	@ ARI	Michael Soroka (8-3)	#69	vs PIT	Paul Skenes (9-9)	#3
Thu, May 7th	@ ARI	Zac Gallen (3-9)	#232	vs PIT	Mitch Keller (6-8)	#124
Fri, May 8th	@ SF	Robbie Ray (10-6)	#97	vs NYM	Nolan McLean (7-7)	#34
Sat, May 9th	@ SF	Landen Roupp (7-10)	#62	vs NYM	Clay Holmes (4-4)	#89
Sun, May 10th	@ SF	Tyler Mahle (3-9)	#100	vs NYM	Huascar Brazoban (5-2)	#182
Mon, May 11th				@ TEX	Jakob Junis
Tue, May 12th	vs COL	Michael Lorenzen (3-10)	#432	@ TEX	MacKenzie Gore (6-9)	#36
Wed, May 13th	vs COL	Jose Quintana (2-3)	#428	@ TEX	Kumar Rocker (4-8)	#81
Fri, May 15th	vs PHI	Aaron Nola (3-9)	#55	@ COL	Kyle Freeland (3-10)	#320
Sat, May 16th	vs PHI	Cristopher Sanchez (14-4)	#4	@ COL	Tomoyuki Sugano (11-4)	#434
Sun, May 17th	vs PHI	Zack Wheeler (10-2)	#6	@ COL	Michael Lorenzen (3-10)	#432
Mon, May 18th				vs SF	Robbie Ray (10-6)	#97
Tue, May 19th	@ STL	Matthew Liberatore (5-8)	#118	vs SF	Landen Roupp (7-10)	#62
Wed, May 20th	@ STL	Michael McGreevy (4-9)	#98	vs SF	Tyler Mahle (3-9)	#100
Thu, May 21st	@ STL	Dustin May (5-7)	#56	vs COL	Zach Agnos
Fri, May 22nd	@ TOR	Kevin Gausman (5-10)	#25	vs COL	Tomoyuki Sugano (11-4)	#434
Sat, May 23rd	@ TOR	Patrick Corbin (3-4)	#295	vs COL	Michael Lorenzen (3-10)	#432
Sun, May 24th	@ TOR	Dylan Cease (7-5)	#8	vs COL	Jose Quintana (2-3)	#428
Mon, May 25th	vs CHC	Ben Brown (4-2)	#140	@ SF	Landen Roupp (7-10)	#62
Tue, May 26th	vs CHC	Jordan Wicks (0-2)	#329	@ SF	Tyler Mahle (3-9)	#100
Wed, May 27th	vs CHC	Jameson Taillon (2-6)	#145	@ SF	Trevor McDonald (3-7)
Fri, May 29th	vs MIN	Taj Bradley (9-4)	#49	@ SEA	George Kirby (8-9)	#19
Sat, May 30th	vs MIN	Bailey Ober (7-3)	#84	@ SEA	Bryan Woo (7-8)	#12
Sun, May 31st	vs MIN	Zebby Matthews (4-8)	#131	@ SEA	Bryce Miller (4-5)	#33
Mon, Jun 1st				vs LAD	Emmet Sheehan (4-8)	#77
Tue, Jun 2nd	@ HOU	Mike Burrows (4-9)	#221	vs LAD	Eric Lauer (6-5)	#312
Wed, Jun 3rd	@ HOU	Spencer Arrighetti (7-5)	#278	vs LAD	Shohei Ohtani (8-2)	#1
Thu, Jun 4th	@ HOU	Kai-Wei Teng (5-6)	#260	vs LAD	Justin Wrobleski (11-3)	#92
Fri, Jun 5th	@ ATL	Martin Perez (7-6)	#204	vs WSH	Foster Griffin (12-3)	#53
Sat, Jun 6th	@ ATL	Spencer Strider (4-2)	#317	vs WSH	Zack Littell (7-8)	#191
Sun, Jun 7th	@ ATL	Bryce Elder (7-6)	#139	vs WSH	Cade Cavalli (8-5)	#54
Tue, Jun 9th	vs LAD	Eric Lauer (6-5)	#312	@ MIA	Max Meyer (9-1)	#86
Wed, Jun 10th	vs LAD	Shohei Ohtani (8-2)	#1	@ MIA	Ryan Gusto (0-2)	#224
Thu, Jun 11th	vs LAD	Justin Wrobleski (11-3)	#92	@ MIA	Tyler Phillips (3-5)	#263
Fri, Jun 12th	vs MIA	Sandy Alcantara (12-6)	#58	@ CIN	Nick Lodolo (3-2)	#115
Sat, Jun 13th	vs MIA	Lake Bachar (1-2)	#216	@ CIN	Rhett Lowder (3-7)	#280
Sun, Jun 14th	vs MIA	Max Meyer (9-1)	#86	@ CIN	Andrew Abbott (5-7)	#109
Mon, Jun 15th	@ ATH	J.T. Ginn (8-6)	#160	vs LAA	Walbert Urena (7-7)	#261
Tue, Jun 16th	@ ATH	Jack Perkins (2-7)	#94	vs LAA	Reid Detmers (3-7)	#35
Wed, Jun 17th	@ ATH	Aaron Civale (5-7)	#186	vs LAA	Sam Aldegheri (3-4)	#423
Fri, Jun 19th	@ COL	Kyle Freeland (3-10)	#320	vs MIN	Connor Prielipp (3-5)	#106
Sat, Jun 20th	@ COL	Tomoyuki Sugano (11-4)	#434	vs MIN	Taj Bradley (9-4)	#49
Sun, Jun 21st	@ COL	Michael Lorenzen (3-10)	#432	vs MIN	Mike Paredes (0-3)	#404
Mon, Jun 22nd				@ STL	Andre Pallante (11-6)	#111
Tue, Jun 23rd	vs SEA	George Kirby (8-9)	#19	@ STL	Kyle Leahy (7-4)	#123
Wed, Jun 24th	vs SEA	Bryan Woo (7-8)	#12	@ STL	Matthew Liberatore (5-8)	#118
Fri, Jun 26th	vs CIN	Andrew Abbott (5-7)	#109	@ TB	Nick Martinez (10-3)	#99
Sat, Jun 27th	vs CIN	Chase Burns (13-1)	#26	@ TB	Cole Sulser
Sun, Jun 28th	vs CIN	Brady Singer (5-10)	#152	@ TB	Drew Rasmussen (10-5)	#17
Mon, Jun 29th	@ PHI	Aaron Nola (3-9)	#55	vs SF	Tyler Mahle (3-9)	#100
Tue, Jun 30th	@ PHI	Cristopher Sanchez (14-4)	#4	vs SF	Landen Roupp (7-10)	#62
Wed, Jul 1st	@ PHI	Zack Wheeler (10-2)	#6	vs SF	Trevor McDonald (3-7)
Fri, Jul 3rd	@ WSH	Foster Griffin (12-3)	#53	vs MIL	Kyle Harrison (8-2)	#44
Sat, Jul 4th	@ WSH	Carson Palmquist (0-1)	#274	vs MIL	Brandon Woodruff (2-2)
Sun, Jul 5th	@ WSH	Cade Cavalli (8-5)	#54	vs MIL	Brandon Sproat (3-7)	#151
Mon, Jul 6th				@ SD	Walker Buehler (6-5)	#243
Tue, Jul 7th	vs ATL	Hurston Waldrep (0-1)	#401	@ SD	German Marquez (4-2)	#381
Wed, Jul 8th	vs ATL	Grant Holmes (6-4)	#180	@ SD	Michael King (6-8)	#57
Thu, Jul 9th	vs ATL	Bryce Elder (7-6)	#139	@ SD	Griffin Canning (3-9)	#167
Fri, Jul 10th				@ LAD	Kyle Hurt
Sat, Jul 11th	vs MIL	Shane Drohan (6-4)	#71	@ LAD	Yoshinobu Yamamoto (11-7)	#13
Sun, Jul 12th	vs MIL	Robert Gasser (3-4)	#110	@ LAD	Emmet Sheehan (4-8)	#77
Fri, Jul 17th				vs STL	Michael McGreevy (4-9)	#98
Sat, Jul 18th	@ CLE	Logan Allen (0-0)	#183	vs STL	Dustin May (5-7)	#56
Sun, Jul 19th	@ CLE	Joey Cantillo (8-6)	#85	vs STL	Andre Pallante (11-6)	#111
Mon, Jul 20th	@ NYY	Ryan Weathers (4-7)	#64	vs ATH	Jeffrey Springs (3-11)	#241
Tue, Jul 21st				vs ATH	Jack Perkins (2-7)	#94
Wed, Jul 22nd	@ NYY	Max Fried (4-3)	#14	vs ATH	Gage Jump (4-7)	#83
Thu, Jul 23rd				@ STL	Michael McGreevy (4-9)	#98
Fri, Jul 24th	vs CHC	Matthew Boyd (7-1)	#38	@ WSH	Carson Palmquist (0-1)	#274
Sat, Jul 25th	vs CHC	Shota Imanaga (7-9)	#28	@ WSH	Foster Griffin (12-3)	#53
Sun, Jul 26th	vs CHC	Jameson Taillon (2-6)	#145	@ WSH	Miles Mikolas (3-8)	#277
Mon, Jul 27th	vs ARI	Merrill Kelly (8-9)	#130	@ PIT	Mitch Keller (6-8)	#124
Tue, Jul 28th	vs ARI	Brandon Pfaadt (6-1)	#90	@ PIT	Bubba Chandler (4-8)	#102
Wed, Jul 29th	vs ARI	Eduardo Rodriguez (10-3)	#127	@ PIT	Jared Jones (2-2)	#52
Fri, Jul 31st	@ CIN	Hunter Greene (2-2)	#29	@ CLE	Tanner Bibee (4-11)	#51
Sat, Aug 1st	@ CIN	Andrew Abbott (5-7)	#109	@ CLE	Parker Messick (8-6)	#42
Sun, Aug 2nd	@ CIN	Chase Burns (13-1)	#26	@ CLE	Gavin Williams (11-6)	#24
Mon, Aug 3rd	@ MIL	Brandon Sproat (3-7)	#151	vs SD	Michael King (6-8)	#57
Tue, Aug 4th	@ MIL	Logan Henderson (5-1)	#39	vs SD	Randy Vasquez (6-6)	#321
Wed, Aug 5th	@ MIL	Kyle Harrison (8-2)	#44	vs SD	JP Sears (3-4)	#170
Thu, Aug 6th	@ MIL	Shane Drohan (6-4)	#71	vs SD	Walker Buehler (6-5)	#243
Fri, Aug 7th	vs NYM	Zac Thornton (2-2)	#158	vs LAD	Roki Sasaki (5-5)	#96
Sat, Aug 8th	vs NYM	Clay Holmes (4-4)	#89	vs LAD	Yoshinobu Yamamoto (11-7)	#13
Sun, Aug 9th	vs NYM	Sean Manaea (2-5)	#75	vs LAD	Emmet Sheehan (4-8)	#77
Mon, Aug 10th				vs COL	Gabriel Hughes (0-3)	#240
Tue, Aug 11th	@ MIA	Eury Perez (5-8)	#41	vs COL	Tomoyuki Sugano (11-4)	#434
Wed, Aug 12th	@ MIA	Janson Junk (5-6)	#119	vs COL	Ryan Feltner (4-5)	#431
Fri, Aug 14th	vs BOS			@ ATL
Sat, Aug 15th	vs BOS			@ ATL
Sun, Aug 16th	vs BOS			@ ATL
Mon, Aug 17th	vs DET			@ BOS
Tue, Aug 18th	vs DET			@ BOS
Wed, Aug 19th	vs DET			@ BOS
Fri, Aug 21st	@ LAD			vs CIN
Sat, Aug 22nd	@ LAD			vs CIN
Sun, Aug 23rd	@ LAD			vs CIN
Mon, Aug 24th	@ SD			vs CHC
Tue, Aug 25th	@ SD			vs CHC
Wed, Aug 26th	@ SD			vs CHC
Thu, Aug 27th				@ SF
Fri, Aug 28th	@ STL			@ SF
Sat, Aug 29th	@ STL			@ SF
Mon, Aug 31st				vs PHI
Tue, Sep 1st	vs SF			vs PHI
Wed, Sep 2nd	vs SF			vs PHI
Fri, Sep 4th	vs LAA			@ HOU
Sat, Sep 5th	vs LAA			@ HOU
Sun, Sep 6th	vs LAA			@ HOU
Mon, Sep 7th				@ KC
Tue, Sep 8th	@ CWS			@ KC
Wed, Sep 9th	@ CWS			@ KC
Fri, Sep 11th	@ CHC			vs TEX
Sat, Sep 12th	@ CHC			vs TEX
Sun, Sep 13th	@ CHC			vs TEX
Mon, Sep 14th				vs MIA
Tue, Sep 15th	vs MIL			vs MIA
Wed, Sep 16th	vs MIL			vs MIA
Fri, Sep 18th	vs KC			vs NYY
Sat, Sep 19th	vs KC			vs NYY
Sun, Sep 20th	vs KC			vs NYY
Tue, Sep 22nd	vs STL			@ COL
Wed, Sep 23rd	vs STL			@ COL
Thu, Sep 24th	vs STL			@ COL
Fri, Sep 25th	@ DET			@ SD
Sat, Sep 26th	@ DET			@ SD
Sun, Sep 27th	@ DET			@ SD
Sun, Mar 29th	@ NYM	Nolan McLean (7-7)	#34
Mon, Apr 6th	vs SD	German Marquez (4-2)	#381
Thu, Apr 16th	vs WSH	Foster Griffin (12-3)	#53
Fri, Apr 24th	@ MIL	Brandon Woodruff (2-2)
Mon, Apr 27th	vs STL	Dustin May (5-7)	#56
Thu, May 14th	vs COL	Chase Dollander (3-3)
Thu, May 28th	vs CHC	Colin Rea (8-8)	#169
Thu, Jun 25th	vs SEA	Bryce Miller (4-5)	#33
Thu, Jul 2nd	@ PHI	Alan Rangel (0-3)	#265
Thu, Jul 30th	@ CIN	Rhett Lowder (3-7)	#280
Thu, Aug 13th	@ MIA
Sun, Aug 30th	@ STL
Thu, Sep 3rd	vs SF
Thu, Sep 10th	@ CWS
Thu, Sep 17th	vs MIL

Who Should I Trade?

Blake Walston for Isaac Mattson (2026)

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