Who Should I Trade?

Isaac Mattson for Michael Petersen (2026)

Summary
Stats
Projections
News & Notes
Schedule

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

Rest of Season	# 303	# 392
VBR	# 471	# 751

Projections

Strikeouts	23	20
Wins	1	1
Saves	2	0
ERA	4.16	4.45
WHIP	1.35	1.42

Misc

Injury Alert	-	-

Expert Ranks

Kelly Kirby FantasyPros	# 323	# 421

Kevin Spinelli KevScores	# 267	# 418

Who Should I Trade? Player Statistics
	Michael Petersen RP - MIA	Isaac Mattson RP - PIT
2026 Stats


Games Played	40	33

Games Started	0	0

Innings Pitched	42.0	31.2

Wins	1	0

Losses	1	0

Saves	1	0

Blown Saves	0	2

Holds	16	8

Hits Allowed	26	31

Earned Runs	14	15

Home Runs Allowed	4	3

Strikeouts	50	28

Walks	17	14

ERA	3.00	4.26

WHIP	1.02	1.42

Who Should I Trade? Player Projections
	Michael Petersen RP - MIA	Isaac Mattson RP - PIT
2026 Projections


Games Played	26	25

Games Started	0	0

Innings Pitched	21.9	21.9

Wins	1	1

Losses	1	1

Saves	2	0

Blown Saves	0	0

Holds	5	4

Hits Allowed	19	20

Earned Runs	10	11

Home Runs Allowed	3	3

Strikeouts	23	20

Walks	9	10

ERA	4.16	4.45

WHIP	1.35	1.42

Who Should I Trade? Player Notes
	Michael Petersen RP - MIA	Isaac Mattson RP - PIT
News
	Michael Petersen is dealing with right hamstring tightness and will undergo further testing to determine the severity. Nicholas Rodriguez Sun, Jul 12th	The Pirates recalled RHP Isaac Mattson from Triple-A Indianapolis. Ari Koslow Sat, Jun 13th
	Michael Petersen earned his first save of the season, striking out two batters and allowing two hits in a scoreless inning during Wednesday’s 7-4 win over the Cincinnati Reds. Nicholas Rodriguez Thu, Apr 9th	Isaac Mattson has been sent to Triple-A Indianapolis. Nate Miller - FantasyPros Wed, May 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
	Michael Petersen RP - MIA			Isaac Mattson RP - PIT
Thu, Mar 26th				@ NYM	Freddy Peralta (5-8)	#35
Sat, Mar 28th	vs COL	Michael Lorenzen (3-9)	#430	@ NYM	David Peterson (4-7)	#85
Sun, Mar 29th	vs COL	Jose Quintana (2-3)	#435	@ NYM	Nolan McLean (6-6)	#31
Mon, Mar 30th	vs CWS	Davis Martin (9-5)	#100	@ CIN	Chase Burns (11-1)	#22
Tue, Mar 31st	vs CWS	Erick Fedde (5-6)	#405	@ CIN	Brandon Williamson (2-3)	#427
Wed, Apr 1st	vs CWS	Shane Smith (0-2)	#153	@ CIN	Andrew Abbott (5-5)	#90
Fri, Apr 3rd	@ NYY	Will Warren (7-4)	#67	vs BAL	Kyle Bradish (6-9)	#40
Sat, Apr 4th	@ NYY	Ryan Weathers (3-7)	#46	vs BAL	Shane Baz (4-9)	#70
Sun, Apr 5th	@ NYY	Max Fried (4-3)	#28	vs BAL	Chris Bassitt (4-4)	#201
Mon, Apr 6th	vs CIN	Brandon Williamson (2-3)	#427	vs SD	German Marquez (4-2)	#330
Tue, Apr 7th	vs CIN	Andrew Abbott (5-5)	#90	vs SD	Nick Pivetta (1-2)	#94
Wed, Apr 8th	vs CIN	Brady Singer (4-9)	#159	vs SD	Michael King (6-7)	#51
Fri, Apr 10th	@ DET	Keider Montero (6-5)	#157	@ CHC	Shota Imanaga (5-8)	#30
Sat, Apr 11th	@ DET	Casey Mize (4-6)	#39	@ CHC	Edward Cabrera (5-4)	#97
Sun, Apr 12th	@ DET	Tarik Skubal (6-5)	#2	@ CHC	Jameson Taillon (2-5)	#119
Mon, Apr 13th	@ ATL	Grant Holmes (5-4)	#148	vs WSH	Cade Cavalli (6-4)	#68
Tue, Apr 14th	@ ATL	Reynaldo Lopez (4-2)	#76	vs WSH	PJ Poulin (3-0)	#294
Wed, Apr 15th	@ ATL	Bryce Elder (5-6)	#124	vs WSH	Jake Irvin (2-4)	#200
Thu, Apr 16th				vs WSH	Foster Griffin (10-2)	#62
Fri, Apr 17th	vs MIL	Coleman Crow (0-1)	#257	vs TB	Nick Martinez (8-2)	#88
Sat, Apr 18th	vs MIL	Brandon Woodruff (2-2)	#160	vs TB	Drew Rasmussen (7-5)	#20
Sun, Apr 19th	vs MIL	Jacob Misiorowski (10-4)	#6	vs TB	Shane McClanahan (8-5)	#33
Tue, Apr 21st	vs STL	Dustin May (5-7)	#52	@ TEX	Kumar Rocker (2-8)	#103
Wed, Apr 22nd	vs STL	Kyle Leahy (7-4)	#130	@ TEX	Jack Leiter (3-7)	#114
Thu, Apr 23rd				@ TEX	Jacob deGrom (7-5)	#9
Fri, Apr 24th	@ SF	Adrian Houser (2-6)	#186	@ MIL	Brandon Woodruff (2-2)	#160
Sat, Apr 25th	@ SF	Robbie Ray (8-6)	#86	@ MIL	Jacob Misiorowski (10-4)	#6
Sun, Apr 26th	@ SF	Landen Roupp (7-8)	#59	@ MIL	Kyle Harrison (8-2)	#58
Mon, Apr 27th	@ LAD	Yoshinobu Yamamoto (9-6)	#12	vs STL	Dustin May (5-7)	#52
Tue, Apr 28th	@ LAD	Shohei Ohtani (8-2)	#1	vs STL	Kyle Leahy (7-4)	#130
Wed, Apr 29th	@ LAD	Tyler Glasnow (3-0)	#63	vs STL	Andre Pallante (10-6)	#137
Thu, Apr 30th				vs STL	Hunter Dobbins (1-1)	#176
Fri, May 1st	vs PHI	Zack Wheeler (10-1)	#5	vs CIN	Brady Singer (4-9)	#159
Sat, May 2nd	vs PHI	Andrew Painter (1-8)	#264	vs CIN	Rhett Lowder (3-7)	#210
Sun, May 3rd	vs PHI	Jesus Luzardo (9-4)	#11	vs CIN	Chase Burns (11-1)	#22
Tue, May 5th	vs BAL	Chris Bassitt (4-4)	#201	@ ARI	Eduardo Rodriguez (8-3)	#115
Wed, May 6th	vs BAL	Brandon Young (7-2)	#134	@ ARI	Michael Soroka (8-3)	#71
Thu, May 7th	vs BAL	Cade Povich (1-1)	#235	@ ARI	Zac Gallen (3-9)	#172
Fri, May 8th	vs WSH	Foster Griffin (10-2)	#62	@ SF	Robbie Ray (8-6)	#86
Sat, May 9th	vs WSH	Richard Lovelady (2-4)	#290	@ SF	Landen Roupp (7-8)	#59
Sun, May 10th	vs WSH	Cade Cavalli (6-4)	#68	@ SF	Tyler Mahle (2-8)	#89
Tue, May 12th	@ MIN	Bailey Ober (7-3)	#95	vs COL	Michael Lorenzen (3-9)	#430
Wed, May 13th	@ MIN	Simeon Woods Richardson (1-7)	#377	vs COL	Jose Quintana (2-3)	#435
Thu, May 14th	@ MIN	Zebby Matthews (4-6)	#109	vs COL	Chase Dollander (3-3)
Fri, May 15th	@ TB	Ian Seymour (6-2)	#75	vs PHI	Aaron Nola (3-7)	#53
Sat, May 16th	@ TB	Nick Martinez (8-2)	#88	vs PHI	Cristopher Sanchez (11-4)	#4
Sun, May 17th	@ TB	Drew Rasmussen (7-5)	#20	vs PHI	Zack Wheeler (10-1)	#5
Tue, May 19th	vs ATL	Martin Perez (6-6)	#240	@ STL	Matthew Liberatore (5-6)	#120
Wed, May 20th	vs ATL	Chris Sale (10-6)	#7	@ STL	Michael McGreevy (4-7)	#80
Thu, May 21st	vs ATL	Spencer Strider (4-2)	#205	@ STL	Dustin May (5-7)	#52
Fri, May 22nd	vs NYM	Tobias Myers (0-2)	#230	@ TOR	Kevin Gausman (4-8)	#23
Sat, May 23rd	vs NYM	Freddy Peralta (5-8)	#35	@ TOR	Patrick Corbin (3-4)	#223
Sun, May 24th	vs NYM	Christian Scott (3-1)	#66	@ TOR	Dylan Cease (6-4)	#10
Mon, May 25th	@ TOR	Trey Yesavage (4-4)	#84	vs CHC	Ben Brown (4-2)	#91
Tue, May 26th	@ TOR	Braydon Fisher (3-3)	#165	vs CHC	Jordan Wicks (0-2)	#231
Wed, May 27th	@ TOR	Kevin Gausman (4-8)	#23	vs CHC	Jameson Taillon (2-5)	#119
Thu, May 28th				vs CHC	Colin Rea (7-6)	#194
Fri, May 29th	@ NYM	Freddy Peralta (5-8)	#35	vs MIN	Taj Bradley (9-4)	#48
Sat, May 30th	@ NYM	Christian Scott (3-1)	#66	vs MIN	Bailey Ober (7-3)	#95
Sun, May 31st	@ NYM	Nolan McLean (6-6)	#31	vs MIN	Zebby Matthews (4-6)	#109
Tue, Jun 2nd	@ WSH	Richard Lovelady (2-4)	#290	@ HOU	Mike Burrows (4-9)	#181
Wed, Jun 3rd	@ WSH	Andrew Alvarez (2-3)	#149	@ HOU	Spencer Arrighetti (7-5)	#138
Thu, Jun 4th				@ HOU	Kai-Wei Teng (4-6)	#248
Fri, Jun 5th	vs TB	Drew Rasmussen (7-5)	#20	@ ATL	Martin Perez (6-6)	#240
Sat, Jun 6th	vs TB	Shane McClanahan (8-5)	#33	@ ATL	Spencer Strider (4-2)	#205
Sun, Jun 7th	vs TB	Griffin Jax (5-7)	#57	@ ATL	Bryce Elder (5-6)	#124
Tue, Jun 9th	vs ARI	Zac Gallen (3-9)	#172	vs LAD	Eric Lauer (4-5)	#361
Wed, Jun 10th	vs ARI	Ryne Nelson (3-5)	#211	vs LAD	Shohei Ohtani (8-2)	#1
Thu, Jun 11th	vs ARI	Merrill Kelly (7-8)	#118	vs LAD	Justin Wrobleski (10-2)	#82
Fri, Jun 12th	@ PIT	Braxton Ashcraft (9-3)	#25	vs MIA	Sandy Alcantara (10-5)	#55
Sat, Jun 13th	@ PIT	Bubba Chandler (3-8)	#129	vs MIA	Lake Bachar (1-1)	#187
Sun, Jun 14th	@ PIT	Paul Skenes (8-8)	#3	vs MIA	Max Meyer (9-1)	#42
Mon, Jun 15th	@ PHI	Zack Wheeler (10-1)	#5	@ ATH	J.T. Ginn (8-6)	#156
Tue, Jun 16th	@ PHI	Jesus Luzardo (9-4)	#11	@ ATH	Jack Perkins (2-5)	#108
Wed, Jun 17th	@ PHI	Andrew Painter (1-8)	#264	@ ATH	Aaron Civale (5-7)	#299
Fri, Jun 19th	vs SF	Landen Roupp (7-8)	#59	@ COL	Kyle Freeland (2-8)	#277
Sat, Jun 20th	vs SF	Trevor McDonald (3-7)	#173	@ COL	Tomoyuki Sugano (9-4)	#438
Sun, Jun 21st	vs SF	Logan Webb (5-7)	#15	@ COL	Michael Lorenzen (3-9)	#430
Tue, Jun 23rd	vs TEX	Cal Quantrill (3-2)	#319	vs SEA	George Kirby (7-8)	#18
Wed, Jun 24th	vs TEX	Jacob deGrom (7-5)	#9	vs SEA	Bryan Woo (7-6)	#13
Thu, Jun 25th				vs SEA	Bryce Miller (4-4)	#34
Fri, Jun 26th	@ STL	Michael McGreevy (4-7)	#80	vs CIN	Andrew Abbott (5-5)	#90
Sat, Jun 27th	@ STL	Andre Pallante (10-6)	#137	vs CIN	Chase Burns (11-1)	#22
Sun, Jun 28th	@ STL	Kyle Leahy (7-4)	#130	vs CIN	Brady Singer (4-9)	#159
Mon, Jun 29th	@ COL	Sean Sullivan (0-3)	#434	@ PHI	Aaron Nola (3-7)	#53
Tue, Jun 30th	@ COL	Tanner Gordon (0-2)	#421	@ PHI	Cristopher Sanchez (11-4)	#4
Wed, Jul 1st	@ COL	Kyle Freeland (2-8)	#277	@ PHI	Zack Wheeler (10-1)	#5
Thu, Jul 2nd	@ COL	Michael Lorenzen (3-9)	#430	@ PHI	Alan Rangel (0-2)	#304
Fri, Jul 3rd	@ ATH	Jack Perkins (2-5)	#108	@ WSH	Foster Griffin (10-2)	#62
Sat, Jul 4th	@ ATH	Aaron Civale (5-7)	#299	@ WSH	Carson Palmquist (0-1)	#285
Sun, Jul 5th	@ ATH	Gage Jump (3-5)	#99	@ WSH	Cade Cavalli (6-4)	#68
Tue, Jul 7th	vs SEA	Bryan Woo (7-6)	#13	vs ATL	Hurston Waldrep (0-1)	#228
Wed, Jul 8th	vs SEA	George Kirby (7-8)	#18	vs ATL	Grant Holmes (5-4)	#148
Thu, Jul 9th	vs SEA	Bryce Miller (4-4)	#34	vs ATL	Bryce Elder (5-6)	#124
Sat, Jul 11th	vs CLE	Tanner Bibee (3-9)	#44	vs MIL	Shane Drohan (5-3)	#93
Sun, Jul 12th	vs CLE	Joey Cantillo (8-4)	#83	vs MIL	Robert Gasser (2-4)	#136
Sat, Jul 18th	@ MIL	Shane Drohan (5-3)	#93	@ CLE	Logan Allen (0-0)	#161
Sun, Jul 19th	@ MIL	Robert Gasser (2-4)	#136	@ CLE	Joey Cantillo (8-4)	#83
Mon, Jul 20th	@ HOU	Tatsuya Imai (5-4)	#135	@ NYY	Will Warren (7-4)	#67
Tue, Jul 21st	@ HOU	Cristian Javier (0-1)	#237	@ NYY	Elmer Rodriguez (0-2)	#275
Wed, Jul 22nd	@ HOU	Peter Lambert (8-5)	#164	@ NYY	Gerrit Cole (3-5)	#27
Fri, Jul 24th	vs SD	German Marquez (4-2)	#330	vs CHC	Matthew Boyd (6-1)	#38
Sat, Jul 25th	vs SD	Randy Vasquez (6-6)	#300	vs CHC	Shota Imanaga (5-8)	#30
Sun, Jul 26th	vs SD	Walker Buehler (5-5)	#180	vs CHC	Jameson Taillon (2-5)	#119
Mon, Jul 27th	vs PHI	Zack Wheeler (10-1)	#5	vs ARI	Merrill Kelly (7-8)	#118
Tue, Jul 28th	vs PHI			vs ARI
Wed, Jul 29th	vs PHI			vs ARI
Thu, Jul 30th	@ NYM			@ CIN
Fri, Jul 31st	@ NYM			@ CIN
Sat, Aug 1st	@ NYM			@ CIN
Sun, Aug 2nd	@ NYM			@ CIN
Mon, Aug 3rd				@ MIL
Tue, Aug 4th	@ ATL			@ MIL
Wed, Aug 5th	@ ATL			@ MIL
Thu, Aug 6th	@ ATL			@ MIL
Fri, Aug 7th	vs LAA			vs NYM
Sat, Aug 8th	vs LAA			vs NYM
Sun, Aug 9th	vs LAA			vs NYM
Tue, Aug 11th	vs PIT			@ MIA
Wed, Aug 12th	vs PIT			@ MIA
Thu, Aug 13th	vs PIT			@ MIA
Fri, Aug 14th	@ CIN			vs BOS
Sat, Aug 15th	@ CIN			vs BOS
Sun, Aug 16th	@ CIN			vs BOS
Mon, Aug 17th	@ PHI			vs DET
Tue, Aug 18th	@ PHI			vs DET
Wed, Aug 19th	@ PHI			vs DET
Fri, Aug 21st	vs WSH			@ LAD
Sat, Aug 22nd	vs WSH			@ LAD
Sun, Aug 23rd	vs WSH			@ LAD
Mon, Aug 24th	vs BOS			@ SD
Tue, Aug 25th	vs BOS			@ SD
Wed, Aug 26th	vs BOS			@ SD
Fri, Aug 28th	@ WSH			@ STL
Sat, Aug 29th	@ WSH			@ STL
Sun, Aug 30th	@ WSH			@ STL
Tue, Sep 1st	@ KC			vs SF
Wed, Sep 2nd	@ KC			vs SF
Thu, Sep 3rd	@ KC			vs SF
Fri, Sep 4th	vs CHC			vs LAA
Sat, Sep 5th	vs CHC			vs LAA
Sun, Sep 6th	vs CHC			vs LAA
Tue, Sep 8th	vs NYM			@ CWS
Wed, Sep 9th	vs NYM			@ CWS
Thu, Sep 10th				@ CWS
Fri, Sep 11th	vs LAD			@ CHC
Sat, Sep 12th	vs LAD			@ CHC
Sun, Sep 13th	vs LAD			@ CHC
Tue, Sep 15th	@ ARI			vs MIL
Wed, Sep 16th	@ ARI			vs MIL
Thu, Sep 17th				vs MIL
Fri, Sep 18th	@ SD			vs KC
Sat, Sep 19th	@ SD			vs KC
Sun, Sep 20th	@ SD			vs KC
Tue, Sep 22nd	@ CHC			vs STL
Wed, Sep 23rd	@ CHC			vs STL
Thu, Sep 24th	@ CHC			vs STL
Fri, Sep 25th	vs ATL			@ DET
Sat, Sep 26th	vs ATL			@ DET
Sun, Sep 27th	vs ATL			@ DET
Fri, Mar 27th	vs COL	Kyle Freeland (2-8)	#277
Thu, Apr 9th	vs CIN	Rhett Lowder (3-7)	#210
Mon, Apr 20th	vs STL	Michael McGreevy (4-7)	#80
Mon, May 4th	vs PHI	Aaron Nola (3-7)	#53
Mon, May 18th	vs ATL	JR Ritchie (1-2)	#219
Mon, Jun 1st	@ WSH	Cade Cavalli (6-4)	#68
Mon, Jun 22nd	vs TEX	Tyler Alexander (1-1)	#150
Fri, Jul 10th	vs CLE	Parker Messick (8-5)	#41
Fri, Jul 17th	@ MIL	Logan Henderson (3-1)	#56
Mon, Aug 31st	@ WSH
Mon, Sep 7th	vs NYM
Mon, Sep 14th	@ ARI

Who Should I Trade?

Isaac Mattson for Michael Petersen (2026)

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