Who Should I Trade?

William Kempner for Yilber Diaz (2026)

Summary
Stats
Projections
News & Notes
Schedule

Who Should I Trade? Player Summaries
	Experts' Pick
	William Kempner RP - MIA	Yilber Diaz RP - DET
Expert Recommendation	100% Recommended by 1 of 1 experts	0% Recommended by 0 of 1 experts
Rankings

Rest of Season	‐	‐
VBR	# 814	# 1048

Projections

Strikeouts	10	5
Wins	1	0
Saves	0	0
ERA	4.25	4.50
WHIP	1.56	1.51

Misc

Injury Alert	IL15	MiLB

Expert Ranks

Kelly Kirby FantasyPros	# 391	‐

Who Should I Trade? Player Statistics
	William Kempner RP - MIA	Yilber Diaz RP - DET
2026 Stats


Games Played	9	1

Games Started	0	0

Innings Pitched	12.1	0.2

Wins	1	0

Losses	0	0

Saves	0	0

Blown Saves	0	0

Holds	0	0

Hits Allowed	8	7

Earned Runs	4	7

Home Runs Allowed	1	1

Strikeouts	14	0

Walks	4	1

ERA	2.92	94.50

WHIP	0.97	12.00

Who Should I Trade? Player Projections
	William Kempner RP - MIA	Yilber Diaz RP - DET
2026 Projections


Games Played	11	8

Games Started	0	0

Innings Pitched	9.1	5.4

Wins	1	0

Losses	1	0

Saves	0	0

Blown Saves	0	0

Holds	0	0

Hits Allowed	8	5

Earned Runs	4	3

Home Runs Allowed	1	1

Strikeouts	10	5

Walks	5	3

ERA	4.25	4.50

WHIP	1.56	1.51

Who Should I Trade? Player Notes
	William Kempner RP - MIA	Yilber Diaz RP - DET
News
	William Kempner remains shut down from throwing. Ari Koslow Fri, Jul 17th	The Tigers optioned Yilber Diaz to Triple-A Toledo. Ari Koslow Fri, Jun 26th
	The Miami Marlins placed William Kempner on the 15-day injured list on Sunday due to a right elbow sprain. Nicholas Rodriguez Sun, Jul 12th	The Tigers have claimed pitcher Yilber Diaz off waivers from the Diamondbacks. Ari Koslow Fri, Jun 26th
	The Marlins recalled William Kempner from Triple-A Jacksonville. Ari Koslow Fri, Jul 3rd	The Diamondbacks designated RHP Yilber Díaz for assignment. Ari Koslow Sun, Jun 21st
	The Marlins optioned RHP Will Kempner to Triple-A Jacksonville. Ari Koslow Tue, Jun 16th	Yilber Diaz is being called up to the Arizona Diamondbacks. Diego Sandoval Fri, Jun 19th
	The Marlins recalled RHP William Kempner from Triple-A Jacksoville. Ari Koslow Sat, May 30th	Diaz transitioned to a relief role at Triple-A Reno last season and issued 73 walks across 57 innings in the minors. He allowed four runs on three hits and two walks over 1.2 innings this spring. Bruno Mulé Thu, Mar 5th
Notes
There are no recent notes for these players

Who Should I Trade? Player Schedules
Date	Opp	Opp Pitcher	VBR	Opp	Opp Pitcher	VBR
	William Kempner RP - MIA			Yilber Diaz RP - DET
Fri, Mar 27th	vs COL	Kyle Freeland (2-8)	#277	@ SD	Michael King (6-7)	#51
Sat, Mar 28th	vs COL	Michael Lorenzen (3-9)	#430	@ SD	Randy Vasquez (6-6)	#300
Sun, Mar 29th	vs COL	Jose Quintana (2-3)	#435
Mon, Mar 30th	vs CWS	Davis Martin (9-5)	#100	@ ARI	Michael Soroka (8-3)	#71
Tue, Mar 31st	vs CWS	Erick Fedde (5-6)	#405	@ ARI	Brandon Pfaadt (4-1)	#79
Wed, Apr 1st	vs CWS	Shane Smith (0-2)	#153	@ ARI	Zac Gallen (3-9)	#172
Fri, Apr 3rd	@ NYY	Will Warren (7-4)	#67	vs STL	Michael McGreevy (4-7)	#80
Sat, Apr 4th	@ NYY	Ryan Weathers (3-7)	#46	vs STL	Dustin May (5-7)	#52
Sun, Apr 5th	@ NYY	Max Fried (4-3)	#28	vs STL	Kyle Leahy (7-4)	#130
Mon, Apr 6th	vs CIN	Brandon Williamson (2-3)	#427	@ MIN	Joe Ryan (6-5)	#14
Tue, Apr 7th	vs CIN	Andrew Abbott (5-5)	#90	@ MIN	Taj Bradley (9-4)	#48
Wed, Apr 8th	vs CIN	Brady Singer (4-9)	#159	@ MIN	Bailey Ober (7-3)	#95
Thu, Apr 9th	vs CIN	Rhett Lowder (3-7)	#210	@ MIN	Mick Abel (1-2)	#258
Fri, Apr 10th	@ DET	Keider Montero (6-5)	#157	vs MIA	Chris Paddack (0-7)
Sat, Apr 11th	@ DET	Casey Mize (4-6)	#39	vs MIA	Janson Junk (4-5)	#110
Sun, Apr 12th	@ DET	Tarik Skubal (6-5)	#2	vs MIA	Sandy Alcantara (10-5)	#55
Mon, Apr 13th	@ ATL	Grant Holmes (5-4)	#148
Tue, Apr 14th	@ ATL	Reynaldo Lopez (4-2)	#76	vs KC	Cole Ragans (1-4)
Wed, Apr 15th	@ ATL	Bryce Elder (5-6)	#124	vs KC	Seth Lugo (3-6)	#122
Fri, Apr 17th	vs MIL	Coleman Crow (0-1)	#257	@ BOS	Ranger Suarez (4-3)	#24
Sat, Apr 18th	vs MIL	Brandon Woodruff (2-2)	#160	@ BOS	Brayan Bello (2-6)	#141
Sun, Apr 19th	vs MIL	Jacob Misiorowski (10-4)	#6	@ BOS	Garrett Crochet (3-3)	#64
Mon, Apr 20th	vs STL	Michael McGreevy (4-7)	#80	@ BOS	Sonny Gray (11-1)	#32
Tue, Apr 21st	vs STL	Dustin May (5-7)	#52	vs MIL	Kyle Harrison (8-2)	#58
Wed, Apr 22nd	vs STL	Kyle Leahy (7-4)	#130	vs MIL	DL Hall (0-0)	#331
Fri, Apr 24th	@ SF	Adrian Houser (2-6)	#186	@ CIN	Andrew Abbott (5-5)	#90
Sat, Apr 25th	@ SF	Robbie Ray (8-6)	#86	@ CIN	Brady Singer (4-9)	#159
Sun, Apr 26th	@ SF	Landen Roupp (7-8)	#59	@ CIN	Rhett Lowder (3-7)	#210
Mon, Apr 27th	@ LAD	Yoshinobu Yamamoto (9-6)	#12
Tue, Apr 28th	@ LAD	Shohei Ohtani (8-2)	#1	@ ATL	Martin Perez (6-6)	#240
Wed, Apr 29th	@ LAD	Tyler Glasnow (3-0)	#63	@ ATL	JR Ritchie (1-2)	#219
Fri, May 1st	vs PHI	Zack Wheeler (10-1)	#5	vs TEX	MacKenzie Gore (6-8)	#37
Sat, May 2nd	vs PHI	Andrew Painter (1-8)	#264	vs TEX	Kumar Rocker (2-8)	#103
Sun, May 3rd	vs PHI	Jesus Luzardo (9-4)	#11	vs TEX	Jack Leiter (3-7)	#114
Mon, May 4th	vs PHI	Aaron Nola (3-7)	#53	vs BOS	Payton Tolle (5-6)	#61
Tue, May 5th	vs BAL	Chris Bassitt (4-4)	#201	vs BOS	Jovani Moran (2-2)	#166
Wed, May 6th	vs BAL	Brandon Young (7-2)	#134	vs BOS	Sonny Gray (11-1)	#32
Thu, May 7th	vs BAL	Cade Povich (1-1)	#235
Fri, May 8th	vs WSH	Foster Griffin (10-2)	#62	@ KC	Kris Bubic (3-2)	#131
Sat, May 9th	vs WSH	Richard Lovelady (2-4)	#290	@ KC	Michael Wacha (5-7)	#72
Sun, May 10th	vs WSH	Cade Cavalli (6-4)	#68	@ KC	Noah Cameron (5-7)	#77
Tue, May 12th	@ MIN	Bailey Ober (7-3)	#95	@ NYM	Freddy Peralta (5-8)	#35
Wed, May 13th	@ MIN	Simeon Woods Richardson (1-7)	#377	@ NYM	Christian Scott (3-1)	#66
Thu, May 14th	@ MIN	Zebby Matthews (4-6)	#109	@ NYM	Nolan McLean (6-6)	#31
Fri, May 15th	@ TB	Ian Seymour (6-2)	#75	vs TOR	Trey Yesavage (4-4)	#84
Sat, May 16th	@ TB	Nick Martinez (8-2)	#88	vs TOR	Mason Fluharty (4-1)	#169
Sun, May 17th	@ TB	Drew Rasmussen (7-5)	#20	vs TOR	Kevin Gausman (4-8)	#23
Mon, May 18th	vs ATL	JR Ritchie (1-2)	#219	vs CLE	Slade Cecconi (4-6)	#112
Tue, May 19th	vs ATL	Martin Perez (6-6)	#240	vs CLE	Parker Messick (8-5)	#41
Wed, May 20th	vs ATL	Chris Sale (10-6)	#7	vs CLE	Tanner Bibee (3-9)	#44
Thu, May 21st	vs ATL	Spencer Strider (4-2)	#205	vs CLE	Joey Cantillo (8-4)	#83
Fri, May 22nd	vs NYM	Tobias Myers (0-2)	#230	@ BAL	Keegan Akin (0-1)	#388
Sat, May 23rd	vs NYM	Freddy Peralta (5-8)	#35
Sun, May 24th	vs NYM	Christian Scott (3-1)	#66	@ BAL	Trevor Rogers (6-7)	#78
Mon, May 25th	@ TOR	Trey Yesavage (4-4)	#84
Tue, May 26th	@ TOR	Braydon Fisher (3-3)	#165	vs LAA	Jack Kochanowicz (2-5)
Wed, May 27th	@ TOR	Kevin Gausman (4-8)	#23	vs LAA	Jose Soriano (8-6)	#47
Fri, May 29th	@ NYM	Freddy Peralta (5-8)	#35	@ CWS	Brandon Eisert (2-1)	#207
Sat, May 30th	@ NYM	Christian Scott (3-1)	#66	@ CWS	Anthony Kay (6-4)	#171
Sun, May 31st	@ NYM	Nolan McLean (6-6)	#31	@ CWS	Sean Burke (6-4)	#87
Mon, Jun 1st	@ WSH	Cade Cavalli (6-4)	#68	@ TB	Griffin Jax (5-7)	#57
Tue, Jun 2nd	@ WSH	Richard Lovelady (2-4)	#290	@ TB	Steven Matz (4-4)	#197
Wed, Jun 3rd	@ WSH	Andrew Alvarez (2-3)	#149	@ TB	Nick Martinez (8-2)	#88
Fri, Jun 5th	vs TB	Drew Rasmussen (7-5)	#20	vs SEA	Bryan Woo (7-6)	#13
Sat, Jun 6th	vs TB	Shane McClanahan (8-5)	#33	vs SEA	Bryce Miller (4-4)	#34
Sun, Jun 7th	vs TB	Griffin Jax (5-7)	#57	vs SEA	Luis Castillo (3-8)	#65
Tue, Jun 9th	vs ARI	Zac Gallen (3-9)	#172	vs MIN	Taj Bradley (9-4)	#48
Wed, Jun 10th	vs ARI	Ryne Nelson (3-5)	#211	vs MIN	Mike Paredes (0-2)	#252
Thu, Jun 11th	vs ARI	Merrill Kelly (7-8)	#118	vs MIN	Zebby Matthews (4-6)	#109
Fri, Jun 12th	@ PIT	Braxton Ashcraft (9-3)	#25	@ CLE	Tanner Bibee (3-9)	#44
Sat, Jun 13th	@ PIT	Bubba Chandler (3-8)	#129	@ CLE	Joey Cantillo (8-4)	#83
Sun, Jun 14th	@ PIT	Paul Skenes (8-8)	#3
Mon, Jun 15th	@ PHI	Zack Wheeler (10-1)	#5	@ HOU	Kai-Wei Teng (4-6)	#248
Tue, Jun 16th	@ PHI	Jesus Luzardo (9-4)	#11	@ HOU	Hunter Brown (1-0)	#21
Wed, Jun 17th	@ PHI	Andrew Painter (1-8)	#264	@ HOU	Peter Lambert (8-5)	#164
Fri, Jun 19th	vs SF	Landen Roupp (7-8)	#59	vs CWS	Brandon Eisert (2-1)	#207
Sat, Jun 20th	vs SF	Trevor McDonald (3-7)	#173	vs CWS	Sean Newcomb (0-2)	#139
Sun, Jun 21st	vs SF	Logan Webb (5-7)	#15	vs CWS	Davis Martin (9-5)	#100
Mon, Jun 22nd	vs TEX	Tyler Alexander (1-1)	#150	vs NYY	Gerrit Cole (3-5)	#27
Tue, Jun 23rd	vs TEX	Cal Quantrill (3-2)	#319	vs NYY	Carlos Rodon (4-2)	#98
Wed, Jun 24th	vs TEX	Jacob deGrom (7-5)	#9	vs NYY	Ryan Weathers (3-7)	#46
Fri, Jun 26th	@ STL	Michael McGreevy (4-7)	#80	vs HOU	Spencer Arrighetti (7-5)	#138
Sat, Jun 27th	@ STL	Andre Pallante (10-6)	#137	vs HOU	Kai-Wei Teng (4-6)	#248
Sun, Jun 28th	@ STL	Kyle Leahy (7-4)	#130	vs HOU	Hunter Brown (1-0)	#21
Mon, Jun 29th	@ COL	Sean Sullivan (0-3)	#434	@ NYY	Ryan Weathers (3-7)	#46
Tue, Jun 30th	@ COL	Tanner Gordon (0-2)	#421	@ NYY	Cam Schlittler (9-5)	#19
Wed, Jul 1st	@ COL	Kyle Freeland (2-8)	#277	@ NYY	Will Warren (7-4)	#67
Thu, Jul 2nd	@ COL	Michael Lorenzen (3-9)	#430	@ TEX	Nathan Eovaldi (9-7)	#17
Fri, Jul 3rd	@ ATH	Jack Perkins (2-5)	#108
Sat, Jul 4th	@ ATH	Aaron Civale (5-7)	#299	@ TEX	Cal Quantrill (3-2)	#319
Sun, Jul 5th	@ ATH	Gage Jump (3-5)	#99	@ TEX	Kumar Rocker (2-8)	#103
Tue, Jul 7th	vs SEA	Bryan Woo (7-6)	#13	vs ATH	J.T. Ginn (8-6)	#156
Wed, Jul 8th	vs SEA	George Kirby (7-8)	#18	vs ATH	Jeffrey Springs (3-9)	#183
Thu, Jul 9th	vs SEA	Bryce Miller (4-4)	#34	vs ATH	Jose Suarez	#199
Fri, Jul 10th	vs CLE	Parker Messick (8-5)	#41	vs PHI	Aaron Nola (3-7)	#53
Sat, Jul 11th	vs CLE	Tanner Bibee (3-9)	#44	vs PHI	Cristopher Sanchez (11-4)	#4
Sun, Jul 12th	vs CLE	Joey Cantillo (8-4)	#83	vs PHI	Zack Wheeler (10-1)	#5
Fri, Jul 17th	@ MIL	Logan Henderson (3-1)	#56	@ LAA	Reid Detmers (3-6)	#36
Sat, Jul 18th	@ MIL	Shane Drohan (5-3)	#93	@ LAA	Grayson Rodriguez (3-3)	#96
Sun, Jul 19th	@ MIL	Robert Gasser (2-4)	#136	@ LAA	Ryan Johnson (1-4)	#170
Mon, Jul 20th	@ HOU	Ronel Blanco	#213	@ CHC	Jameson Taillon (2-5)	#119
Tue, Jul 21st	@ HOU	Tatsuya Imai (5-4)	#135	@ CHC	David Peterson (4-7)	#85
Wed, Jul 22nd	@ HOU	Peter Lambert (8-5)	#164	@ CHC	Colin Rea (7-6)	#194
Fri, Jul 24th	vs SD	German Marquez (4-2)	#330	vs KC	Noah Cameron (5-7)	#77
Sat, Jul 25th	vs SD	Randy Vasquez (6-6)	#300	vs KC	Michael Wacha (5-7)	#72
Sun, Jul 26th	vs SD	Walker Buehler (5-5)	#180	vs KC	Luinder Avila (4-3)	#226
Mon, Jul 27th	vs PHI	Zack Wheeler (10-1)	#5	vs BAL	Brandon Young (7-2)	#134
Tue, Jul 28th	vs PHI			vs BAL
Wed, Jul 29th	vs PHI			vs BAL
Thu, Jul 30th	@ NYM
Fri, Jul 31st	@ NYM			@ ATH
Sat, Aug 1st	@ NYM			@ ATH
Sun, Aug 2nd	@ NYM			@ ATH
Tue, Aug 4th	@ ATL			@ SEA
Wed, Aug 5th	@ ATL			@ SEA
Thu, Aug 6th	@ ATL			@ SEA
Fri, Aug 7th	vs LAA			@ SF
Sat, Aug 8th	vs LAA			@ SF
Sun, Aug 9th	vs LAA			@ SF
Tue, Aug 11th	vs PIT			vs CLE
Wed, Aug 12th	vs PIT			vs CLE
Thu, Aug 13th	vs PIT			vs CLE
Fri, Aug 14th	@ CIN			vs CWS
Sat, Aug 15th	@ CIN			vs CWS
Sun, Aug 16th	@ CIN			vs CWS
Mon, Aug 17th	@ PHI			@ PIT
Tue, Aug 18th	@ PHI			@ PIT
Wed, Aug 19th	@ PHI			@ PIT
Fri, Aug 21st	vs WSH			@ KC
Sat, Aug 22nd	vs WSH			@ KC
Sun, Aug 23rd	vs WSH			@ KC
Mon, Aug 24th	vs BOS			vs TB
Tue, Aug 25th	vs BOS			vs TB
Wed, Aug 26th	vs BOS			vs TB
Fri, Aug 28th	@ WSH			vs LAD
Sat, Aug 29th	@ WSH			vs LAD
Sun, Aug 30th	@ WSH			vs LAD
Mon, Aug 31st	@ WSH			@ MIN
Tue, Sep 1st	@ KC			@ MIN
Wed, Sep 2nd	@ KC			@ MIN
Thu, Sep 3rd	@ KC
Fri, Sep 4th	vs CHC			@ CLE
Sat, Sep 5th	vs CHC			@ CLE
Sun, Sep 6th	vs CHC			@ CLE
Mon, Sep 7th	vs NYM			vs MIN
Tue, Sep 8th	vs NYM			vs MIN
Wed, Sep 9th	vs NYM			vs MIN
Fri, Sep 11th	vs LAD			vs COL
Sat, Sep 12th	vs LAD			vs COL
Sun, Sep 13th	vs LAD			vs COL
Mon, Sep 14th	@ ARI			@ TOR
Tue, Sep 15th	@ ARI			@ TOR
Wed, Sep 16th	@ ARI			@ TOR
Fri, Sep 18th	@ SD			@ CWS
Sat, Sep 19th	@ SD			@ CWS
Sun, Sep 20th	@ SD			@ CWS
Tue, Sep 22nd	@ CHC			vs WSH
Wed, Sep 23rd	@ CHC			vs WSH
Thu, Sep 24th	@ CHC
Fri, Sep 25th	vs ATL			vs PIT
Sat, Sep 26th	vs ATL			vs PIT
Sun, Sep 27th	vs ATL			vs PIT
Thu, Mar 26th				@ SD	Nick Pivetta (1-2)	#94
Thu, Apr 16th				vs KC	Kris Bubic (3-2)	#131
Thu, Apr 23rd				vs MIL	Brandon Sproat (3-4)	#125
Thu, Apr 30th				@ ATL	Bryce Elder (5-6)	#124
Thu, May 28th				vs LAA	Grayson Rodriguez (3-3)	#96
Thu, Jun 25th				vs HOU	Tatsuya Imai (5-4)	#135
Thu, Jul 23rd				vs KC	Stephen Kolek (4-3)	#177
Thu, Sep 17th				@ CWS
Mon, Sep 21st				vs WSH

Who Should I Trade?

William Kempner for Yilber Diaz (2026)

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