Who Should I Trade?

Isaac Mattson for John King (2026)

Summary
Stats
Projections
News & Notes
Schedule

Who Should I Trade? Player Summaries
	Experts' Pick
	John King 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	# 319	# 391
VBR	# 572	# 619

Projections

Strikeouts	16	20
Wins	1	1
Saves	1	1
ERA	4.02	4.32
WHIP	1.43	1.40

Misc

Injury Alert	-	-

Expert Ranks

Kelly Kirby FantasyPros	# 350	# 422

Kevin Spinelli KevScores	# 269	# 418

Who Should I Trade? Player Statistics
	John King RP - MIA	Isaac Mattson RP - PIT
2026 Stats


Games Played	41	35

Games Started	1	0

Innings Pitched	40.2	33.0

Wins	6	0

Losses	2	0

Saves	1	0

Blown Saves	0	2

Holds	4	8

Hits Allowed	20	35

Earned Runs	11	18

Home Runs Allowed	4	3

Strikeouts	30	30

Walks	12	15

ERA	2.43	4.91

WHIP	0.79	1.52

Who Should I Trade? Player Projections
	John King RP - MIA	Isaac Mattson RP - PIT
2026 Projections


Games Played	23	24

Games Started	0	0

Innings Pitched	21.8	21.2

Wins	1	1

Losses	1	1

Saves	1	1

Blown Saves	0	0

Holds	3	4

Hits Allowed	23	19

Earned Runs	10	10

Home Runs Allowed	2	3

Strikeouts	16	20

Walks	7	10

ERA	4.02	4.32

WHIP	1.43	1.40

Who Should I Trade? Player Notes
	John King RP - MIA	Isaac Mattson RP - PIT
News
	The Marlins activated John King from the injured list. Ari Koslow Fri, Jul 24th	The Pirates recalled RHP Isaac Mattson from Triple-A Indianapolis. Ari Koslow Sat, Jun 13th
	John King is working on his pitch design and running. Ari Koslow Fri, Jul 17th	Isaac Mattson has been sent to Triple-A Indianapolis. Nate Miller - FantasyPros Wed, May 20th
	The Marlins placed LHP John King on the 15-day injured list with a left lateral ankle sprain. Ari Koslow Thu, Jul 9th	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
	John King will start a bullpen game on Sunday for the Marlins. Ari Koslow Sun, May 31st
	John King recorded the final out of Saturday’s 8-7 win over the Washington Nationals to earn the first save of his career. Nicholas Rodriguez Sun, May 10th
Notes
There are no recent notes for these players

Who Should I Trade? Player Schedules
Date	Opp	Opp Pitcher	VBR	Opp	Opp Pitcher	VBR
	John King RP - MIA			Isaac Mattson RP - PIT
Thu, Mar 26th				@ NYM	Freddy Peralta (5-9)	#43
Sat, Mar 28th	vs COL	Michael Lorenzen (3-9)	#432	@ NYM	David Peterson (5-7)	#66
Sun, Mar 29th	vs COL	Jose Quintana (2-3)	#425	@ NYM	Nolan McLean (7-7)	#31
Mon, Mar 30th	vs CWS	Davis Martin (9-5)	#95	@ CIN	Chase Burns (12-1)	#22
Tue, Mar 31st	vs CWS	Erick Fedde (5-6)	#404	@ CIN	Brandon Williamson (2-3)	#409
Wed, Apr 1st	vs CWS	Shane Smith (0-2)	#194	@ CIN	Andrew Abbott (5-6)	#97
Fri, Apr 3rd	@ NYY	Will Warren (7-4)	#62	vs BAL	Kyle Bradish (7-9)	#42
Sat, Apr 4th	@ NYY	Ryan Weathers (4-7)	#67	vs BAL	Shane Baz (4-9)	#63
Sun, Apr 5th	@ NYY	Max Fried (4-3)	#13	vs BAL	Chris Bassitt (4-4)	#266
Mon, Apr 6th	vs CIN	Brandon Williamson (2-3)	#409	vs SD	German Marquez (4-2)	#376
Tue, Apr 7th	vs CIN	Andrew Abbott (5-6)	#97	vs SD	Nick Pivetta (1-2)	#120
Wed, Apr 8th	vs CIN	Brady Singer (5-9)	#157	vs SD	Michael King (6-7)	#52
Fri, Apr 10th	@ DET	Keider Montero (7-5)	#145	@ CHC	Shota Imanaga (7-8)	#27
Sat, Apr 11th	@ DET	Casey Mize (4-6)	#47	@ CHC	Edward Cabrera (5-4)	#117
Sun, Apr 12th	@ DET	Tarik Skubal (7-5)	#2	@ CHC	Jameson Taillon (2-5)	#103
Mon, Apr 13th	@ ATL	Grant Holmes (6-4)	#158	vs WSH	Cade Cavalli (7-4)	#55
Tue, Apr 14th	@ ATL	Reynaldo Lopez (4-3)	#92	vs WSH	PJ Poulin (3-0)	#288
Wed, Apr 15th	@ ATL	Bryce Elder (6-6)	#149	vs WSH	Jake Irvin (2-4)	#182
Thu, Apr 16th				vs WSH	Foster Griffin (12-2)	#49
Fri, Apr 17th	vs MIL	Coleman Crow (0-1)	#227	vs TB	Nick Martinez (10-2)	#108
Sat, Apr 18th	vs MIL	Brandon Woodruff (2-2)		vs TB	Drew Rasmussen (8-5)	#20
Sun, Apr 19th	vs MIL	Jacob Misiorowski (10-4)	#9	vs TB	Shane McClanahan (9-6)	#30
Tue, Apr 21st	vs STL	Dustin May (5-7)	#45	@ TEX	Kumar Rocker (3-8)	#94
Wed, Apr 22nd	vs STL	Kyle Leahy (7-4)	#115	@ TEX	Jack Leiter (3-7)	#132
Thu, Apr 23rd				@ TEX	Jacob deGrom (7-6)	#7
Fri, Apr 24th	@ SF	Adrian Houser (2-7)	#184	@ MIL	Brandon Woodruff (2-2)
Sat, Apr 25th	@ SF	Robbie Ray (9-6)	#68	@ MIL	Jacob Misiorowski (10-4)	#9
Sun, Apr 26th	@ SF	Landen Roupp (7-8)	#60	@ MIL	Kyle Harrison (8-2)	#54
Mon, Apr 27th	@ LAD	Yoshinobu Yamamoto (11-6)	#11	vs STL	Dustin May (5-7)	#45
Tue, Apr 28th	@ LAD	Shohei Ohtani (8-2)	#1	vs STL	Kyle Leahy (7-4)	#115
Wed, Apr 29th	@ LAD	Tyler Glasnow (3-0)	#75	vs STL	Andre Pallante (11-6)	#136
Thu, Apr 30th				vs STL	Hunter Dobbins (2-1)	#168
Fri, May 1st	vs PHI	Zack Wheeler (10-2)	#6	vs CIN	Brady Singer (5-9)	#157
Sat, May 2nd	vs PHI	Andrew Painter (1-8)	#234	vs CIN	Rhett Lowder (3-7)	#273
Sun, May 3rd	vs PHI	Jesus Luzardo (9-5)	#8	vs CIN	Chase Burns (12-1)	#22
Tue, May 5th	vs BAL	Chris Bassitt (4-4)	#266	@ ARI	Eduardo Rodriguez (9-3)	#107
Wed, May 6th	vs BAL	Brandon Young (8-2)	#128	@ ARI	Michael Soroka (8-3)	#71
Thu, May 7th	vs BAL	Cade Povich (1-1)	#212	@ ARI	Zac Gallen (3-9)	#180
Fri, May 8th	vs WSH	Foster Griffin (12-2)	#49	@ SF	Robbie Ray (9-6)	#68
Sat, May 9th	vs WSH	Richard Lovelady (2-4)	#366	@ SF	Landen Roupp (7-8)	#60
Sun, May 10th	vs WSH	Cade Cavalli (7-4)	#55	@ SF	Tyler Mahle (2-9)	#85
Tue, May 12th	@ MIN	Bailey Ober (7-3)	#93	vs COL	Michael Lorenzen (3-9)	#432
Wed, May 13th	@ MIN	Simeon Woods Richardson (1-7)	#347	vs COL	Jose Quintana (2-3)	#425
Thu, May 14th	@ MIN	Zebby Matthews (4-8)	#116	vs COL	Chase Dollander (3-3)
Fri, May 15th	@ TB	Ian Seymour (6-3)	#72	vs PHI	Aaron Nola (3-8)	#59
Sat, May 16th	@ TB	Nick Martinez (10-2)	#108	vs PHI	Cristopher Sanchez (12-4)	#4
Sun, May 17th	@ TB	Drew Rasmussen (8-5)	#20	vs PHI	Zack Wheeler (10-2)	#6
Tue, May 19th	vs ATL	Martin Perez (6-6)	#169	@ STL	Matthew Liberatore (5-7)	#96
Wed, May 20th	vs ATL	Chris Sale (11-6)	#5	@ STL	Michael McGreevy (4-8)	#90
Thu, May 21st	vs ATL	Spencer Strider (4-2)	#300	@ STL	Dustin May (5-7)	#45
Fri, May 22nd	vs NYM	Tobias Myers (0-2)	#214	@ TOR	Kevin Gausman (4-9)	#28
Sat, May 23rd	vs NYM	Freddy Peralta (5-9)	#43	@ TOR	Patrick Corbin (3-4)	#287
Sun, May 24th	vs NYM	Christian Scott (3-2)	#56	@ TOR	Dylan Cease (7-5)	#12
Mon, May 25th	@ TOR	Trey Yesavage (4-5)	#79	vs CHC	Ben Brown (4-2)	#99
Tue, May 26th	@ TOR	Braydon Fisher (3-3)	#156	vs CHC	Jordan Wicks (0-2)	#225
Wed, May 27th	@ TOR	Kevin Gausman (4-9)	#28	vs CHC	Jameson Taillon (2-5)	#103
Thu, May 28th				vs CHC	Colin Rea (7-7)	#192
Fri, May 29th	@ NYM	Freddy Peralta (5-9)	#43	vs MIN	Taj Bradley (9-4)	#58
Sat, May 30th	@ NYM	Christian Scott (3-2)	#56	vs MIN	Bailey Ober (7-3)	#93
Sun, May 31st	@ NYM	Nolan McLean (7-7)	#31	vs MIN	Zebby Matthews (4-8)	#116
Tue, Jun 2nd	@ WSH	Richard Lovelady (2-4)	#366	@ HOU	Mike Burrows (4-9)	#238
Wed, Jun 3rd	@ WSH	Andrew Alvarez (2-3)	#147	@ HOU	Spencer Arrighetti (7-5)	#161
Thu, Jun 4th				@ HOU	Kai-Wei Teng (5-6)	#241
Fri, Jun 5th	vs TB	Drew Rasmussen (8-5)	#20	@ ATL	Martin Perez (6-6)	#169
Sat, Jun 6th	vs TB	Shane McClanahan (9-6)	#30	@ ATL	Spencer Strider (4-2)	#300
Sun, Jun 7th	vs TB	Griffin Jax (6-7)	#69	@ ATL	Bryce Elder (6-6)	#149
Tue, Jun 9th	vs ARI	Zac Gallen (3-9)	#180	vs LAD	Eric Lauer (5-5)	#362
Wed, Jun 10th	vs ARI	Ryne Nelson (3-5)	#204	vs LAD	Shohei Ohtani (8-2)	#1
Thu, Jun 11th	vs ARI	Merrill Kelly (8-8)	#123	vs LAD	Justin Wrobleski (11-2)	#65
Fri, Jun 12th	@ PIT	Braxton Ashcraft (9-4)	#35	vs MIA	Sandy Alcantara (10-6)	#57
Sat, Jun 13th	@ PIT	Bubba Chandler (3-8)	#124	vs MIA	Lake Bachar (1-1)	#197
Sun, Jun 14th	@ PIT	Paul Skenes (9-9)	#3	vs MIA	Max Meyer (9-1)	#87
Mon, Jun 15th	@ PHI	Zack Wheeler (10-2)	#6	@ ATH	J.T. Ginn (8-6)	#146
Tue, Jun 16th	@ PHI	Jesus Luzardo (9-5)	#8	@ ATH	Jack Perkins (2-5)	#111
Wed, Jun 17th	@ PHI	Andrew Painter (1-8)	#234	@ ATH	Aaron Civale (5-7)	#186
Fri, Jun 19th	vs SF	Landen Roupp (7-8)	#60	@ COL	Kyle Freeland (2-9)	#260
Sat, Jun 20th	vs SF	Trevor McDonald (3-7)	#244	@ COL	Tomoyuki Sugano (10-4)	#433
Sun, Jun 21st	vs SF	Logan Webb (5-7)	#19	@ COL	Michael Lorenzen (3-9)	#432
Tue, Jun 23rd	vs TEX	Cal Quantrill (3-3)	#312	vs SEA	George Kirby (8-8)	#21
Wed, Jun 24th	vs TEX	Jacob deGrom (7-6)	#7	vs SEA	Bryan Woo (7-7)	#14
Thu, Jun 25th				vs SEA	Bryce Miller (4-5)	#41
Fri, Jun 26th	@ STL	Michael McGreevy (4-8)	#90	vs CIN	Andrew Abbott (5-6)	#97
Sat, Jun 27th	@ STL	Andre Pallante (11-6)	#136	vs CIN	Chase Burns (12-1)	#22
Sun, Jun 28th	@ STL	Kyle Leahy (7-4)	#115	vs CIN	Brady Singer (5-9)	#157
Mon, Jun 29th	@ COL	Sean Sullivan (0-3)	#417	@ PHI	Aaron Nola (3-8)	#59
Tue, Jun 30th	@ COL	Tanner Gordon (0-2)	#360	@ PHI	Cristopher Sanchez (12-4)	#4
Wed, Jul 1st	@ COL	Kyle Freeland (2-9)	#260	@ PHI	Zack Wheeler (10-2)	#6
Thu, Jul 2nd	@ COL	Michael Lorenzen (3-9)	#432	@ PHI	Alan Rangel (0-3)	#309
Fri, Jul 3rd	@ ATH	Jack Perkins (2-5)	#111	@ WSH	Foster Griffin (12-2)	#49
Sat, Jul 4th	@ ATH	Aaron Civale (5-7)	#186	@ WSH	Carson Palmquist (0-1)	#308
Sun, Jul 5th	@ ATH	Gage Jump (3-6)	#88	@ WSH	Cade Cavalli (7-4)	#55
Tue, Jul 7th	vs SEA	Bryan Woo (7-7)	#14	vs ATL	Hurston Waldrep (0-1)	#299
Wed, Jul 8th	vs SEA	George Kirby (8-8)	#21	vs ATL	Grant Holmes (6-4)	#158
Thu, Jul 9th	vs SEA	Bryce Miller (4-5)	#41	vs ATL	Bryce Elder (6-6)	#149
Sat, Jul 11th	vs CLE	Tanner Bibee (4-10)	#46	vs MIL	Shane Drohan (5-4)	#74
Sun, Jul 12th	vs CLE	Joey Cantillo (8-6)	#80	vs MIL	Robert Gasser (3-4)	#114
Sat, Jul 18th	@ MIL	Shane Drohan (5-4)	#74	@ CLE	Logan Allen (0-0)	#167
Sun, Jul 19th	@ MIL	Robert Gasser (3-4)	#114	@ CLE	Joey Cantillo (8-6)	#80
Mon, Jul 20th	@ HOU	Ronel Blanco (0-0)	#133	@ NYY	Ryan Weathers (4-7)	#67
Wed, Jul 22nd	@ HOU	Peter Lambert (8-5)	#137	@ NYY	Max Fried (4-3)	#13
Fri, Jul 24th	vs SD	German Marquez (4-2)	#376	vs CHC	Matthew Boyd (6-1)	#38
Sat, Jul 25th	vs SD	Randy Vasquez (6-6)	#268	vs CHC	Shota Imanaga (7-8)	#27
Sun, Jul 26th	vs SD	Walker Buehler (6-5)	#242	vs CHC	Jameson Taillon (2-5)	#103
Mon, Jul 27th	vs PHI	Zack Wheeler (10-2)	#6	vs ARI	Merrill Kelly (8-8)	#123
Tue, Jul 28th	vs PHI	Aaron Nola (3-8)	#59	vs ARI	Brandon Pfaadt (5-1)	#77
Wed, Jul 29th	vs PHI	Jesus Luzardo (9-5)	#8	vs ARI	Eduardo Rodriguez (9-3)	#107
Thu, Jul 30th	@ NYM	Nolan McLean (7-7)	#31	@ CIN	Hunter Greene (2-2)	#16
Fri, Jul 31st	@ NYM	Freddy Peralta (5-9)	#43	@ CIN	Andrew Abbott (5-6)	#97
Sat, Aug 1st	@ NYM	Zac Thornton (1-1)	#152	@ CIN	Chase Burns (12-1)	#22
Sun, Aug 2nd	@ NYM	Clay Holmes (4-4)	#105	@ CIN	Brady Singer (5-9)	#157
Mon, Aug 3rd				@ MIL	Logan Henderson (4-1)	#48
Tue, Aug 4th	@ ATL	Grant Holmes (6-4)	#158	@ MIL	Shane Drohan (5-4)	#74
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 (2-9)	#260
Thu, Apr 9th	vs CIN	Rhett Lowder (3-7)	#273
Mon, Apr 20th	vs STL	Michael McGreevy (4-8)	#90
Mon, May 4th	vs PHI	Aaron Nola (3-8)	#59
Mon, May 18th	vs ATL	JR Ritchie (1-2)	#291
Mon, Jun 1st	@ WSH	Cade Cavalli (7-4)	#55
Mon, Jun 22nd	vs TEX	Tyler Alexander (1-1)	#196
Fri, Jul 10th	vs CLE	Parker Messick (8-5)	#51
Fri, Jul 17th	@ MIL	Logan Henderson (4-1)	#48
Tue, Jul 21st	@ HOU	Tatsuya Imai (6-4)	#119
Mon, Aug 31st	@ WSH
Mon, Sep 7th	vs NYM
Mon, Sep 14th	@ ARI

Who Should I Trade?

Isaac Mattson for John King (2026)

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