Kenley Jansen or William Kempner

Baseball Stats Comparison

Stats
Projections
News & Notes
Schedule

Kenley Jansen or William Kempner Player Statistics
	Kenley Jansen RP - DET	William Kempner RP - MIA
2026 Stats


Games Played	40	9

Games Started	0	0

Innings Pitched	35.2	12.1

Wins	4	1

Losses	5	0

Saves	17	0

Blown Saves	5	0

Holds	1	0

Hits Allowed	22	8

Earned Runs	16	4

Home Runs Allowed	7	1

Strikeouts	41	14

Walks	20	4

ERA	4.04	2.92

WHIP	1.18	0.97

Kenley Jansen or William Kempner Player Projections
	Kenley Jansen RP - DET	William Kempner RP - MIA
2026 Projections


Games Played	58	21

Games Started	0	0

Innings Pitched	57.0	21.5

Wins	3	1

Losses	3	2

Saves	24	0

Blown Saves	2	0

Holds	3	1

Hits Allowed	47	20

Earned Runs	25	11

Home Runs Allowed	8	3

Strikeouts	58	21

Walks	20	12

ERA	3.97	4.71

WHIP	1.17	1.48

Kenley Jansen or William Kempner Player Notes
	Kenley Jansen RP - DET	William Kempner RP - MIA
News
	Kenley Jansen struck out two batters in a scoreless appearance to earn the save in Monday's 8-5 win over the Pirates. Chris Schommer Tue, Aug 18th	The Marlins transferred William Kempner to the 60-day injured list. Ari Koslow Fri, Aug 21st
	Kenley Jansen needed just 10 pitches to toss a scoreless frame and earn the save in Thursday's 3-0 win over the Guardians. Chris Schommer Fri, Aug 14th	William Kempner was scheduled to undergo surgery on Wednesday. Ari Koslow Thu, Aug 20th
	Kenley Jansen allowed one earned run on one hit and two walks to earn the save in Tuesday’s 6-4 win over the Guardians. Chris Schommer Wed, Aug 12th	William Kempner is scheduled to undergo elbow surgery. Ari Koslow Wed, Aug 12th
	Kenley Jansen struck out two batters while allowing one earned run on two hits to earn the save in Saturday's 8-6 win over the Athletics. Chris Schommer Sun, Aug 2nd	The Marlins say William Kempner will be re-evaluated next week. Ari Koslow Fri, Aug 7th
	Kenley Jansen struck out one batter in a scoreless inning to earn the save in Friday's 2-1 win over the Royals. Chris Schommer Sat, Jul 25th	William Kempner remains shut down from throwing. Ari Koslow Fri, Jul 17th
Notes
There are no recent notes for these players

Kenley Jansen or William Kempner Player Schedules
Date	Opp	Opp Pitcher	VBR	Opp	Opp Pitcher	VBR
	Kenley Jansen RP - DET			William Kempner RP - MIA
Thu, Mar 26th	@ SD	Nick Pivetta (1-2)	#196
Fri, Mar 27th	@ SD	Michael King (9-9)	#56	vs COL	Kyle Freeland (4-10)	#409
Sat, Mar 28th	@ SD	Randy Vasquez (10-6)	#182	vs COL	Michael Lorenzen (3-11)	#164
Mon, Mar 30th	@ ARI	Michael Soroka (8-4)	#88	vs CWS	Davis Martin (9-6)	#109
Tue, Mar 31st	@ ARI	Brandon Pfaadt (7-2)	#102	vs CWS	Erick Fedde (7-8)	#421
Wed, Apr 1st	@ ARI	Zac Gallen (3-9)	#146	vs CWS	Shane Smith (0-2)	#300
Fri, Apr 3rd	vs STL	Michael McGreevy (5-9)	#111	@ NYY	Will Warren (9-6)	#73
Sat, Apr 4th	vs STL	Dustin May (6-9)	#60	@ NYY	Ryan Weathers (5-8)	#209
Sun, Apr 5th	vs STL	Kyle Leahy (10-4)	#104	@ NYY	Max Fried (4-4)	#17
Mon, Apr 6th	@ MIN	Joe Ryan (6-8)	#51	vs CIN	Brandon Williamson (2-3)	#217
Tue, Apr 7th	@ MIN	Taj Bradley (10-6)	#46	vs CIN	Andrew Abbott (6-10)	#138
Wed, Apr 8th	@ MIN	Bailey Ober (7-4)	#100	vs CIN	Brady Singer (5-13)	#176
Thu, Apr 9th	@ MIN	Mick Abel (1-2)		vs CIN	Rhett Lowder (6-8)	#173
Fri, Apr 10th	vs MIA	Chris Paddack (0-7)		@ DET	Keider Montero (9-8)	#135
Sat, Apr 11th	vs MIA	Janson Junk (6-8)	#110	@ DET	Casey Mize (5-8)	#47
Sun, Apr 12th	vs MIA	Sandy Alcantara (13-8)	#63	@ DET	Tarik Skubal (8-7)	#2
Tue, Apr 14th	vs KC	Cole Ragans (1-4)		@ ATL	Reynaldo Lopez (4-3)	#103
Wed, Apr 15th	vs KC	Seth Lugo (6-8)	#143	@ ATL	Bryce Elder (8-8)	#158
Thu, Apr 16th	vs KC	Kris Bubic (3-2)	#202
Fri, Apr 17th	@ BOS	Ranger Suarez (5-4)	#32	vs MIL	Coleman Crow (0-1)	#231
Sat, Apr 18th	@ BOS	Brayan Bello (5-7)	#131	vs MIL	Brandon Woodruff (2-2)
Sun, Apr 19th	@ BOS	Garrett Crochet (3-3)	#171	vs MIL	Jacob Misiorowski (14-5)	#7
Mon, Apr 20th	@ BOS	Sonny Gray (16-4)	#34	vs STL	Michael McGreevy (5-9)	#111
Tue, Apr 21st	vs MIL	Kyle Harrison (10-4)	#50	vs STL	Dustin May (6-9)	#60
Wed, Apr 22nd	vs MIL	DL Hall (2-0)	#212	vs STL	Kyle Leahy (10-4)	#104
Thu, Apr 23rd	vs MIL	Brandon Sproat (3-7)	#286
Fri, Apr 24th	@ CIN	Andrew Abbott (6-10)	#138	@ SF	Adrian Houser (4-7)	#331
Sat, Apr 25th	@ CIN	Brady Singer (5-13)	#176	@ SF	Robbie Ray (11-7)	#119
Sun, Apr 26th	@ CIN	Rhett Lowder (6-8)	#173	@ SF	Landen Roupp (8-13)	#98
Tue, Apr 28th	@ ATL	Martin Perez (8-8)	#177	@ LAD	Shohei Ohtani (8-2)	#1
Wed, Apr 29th	@ ATL	JR Ritchie (1-2)	#282	@ LAD	Tyler Glasnow (4-0)	#18
Thu, Apr 30th	@ ATL	Bryce Elder (8-8)	#158
Fri, May 1st	vs TEX	MacKenzie Gore (7-10)	#39	vs PHI	Zack Wheeler (11-5)	#12
Sat, May 2nd	vs TEX	Kumar Rocker (5-10)	#114	vs PHI	Andrew Painter (3-8)	#172
Sun, May 3rd	vs TEX	Jack Leiter (3-7)	#197	vs PHI	Jesus Luzardo (12-5)	#4
Mon, May 4th	vs BOS	Payton Tolle (8-6)	#27	vs PHI	Aaron Nola (6-10)	#55
Tue, May 5th	vs BOS	Jovani Moran (2-3)	#215	vs BAL	Chris Bassitt (6-4)	#156
Wed, May 6th	vs BOS	Sonny Gray (16-4)	#34	vs BAL	Brandon Young (9-3)	#142
Fri, May 8th	@ KC	Kris Bubic (3-2)	#202	vs WSH	Foster Griffin (15-4)	#40
Sat, May 9th	@ KC	Michael Wacha (8-8)	#81	vs WSH	Richard Lovelady (2-4)
Sun, May 10th	@ KC	Noah Cameron (9-8)	#95	vs WSH	Cade Cavalli (12-5)	#43
Tue, May 12th	@ NYM	Freddy Peralta (6-11)	#45	@ MIN	Bailey Ober (7-4)	#100
Wed, May 13th	@ NYM	Christian Scott (4-4)	#41	@ MIN	Simeon Woods Richardson (2-7)	#316
Thu, May 14th	@ NYM	Nolan McLean (10-8)	#36	@ MIN	Zebby Matthews (9-8)	#101
Fri, May 15th	vs TOR	Trey Yesavage (5-5)	#211	@ TB	Ian Seymour (9-6)	#54
Sat, May 16th	vs TOR	Mason Fluharty (5-1)	#117	@ TB	Nick Martinez (13-4)	#89
Sun, May 17th	vs TOR	Kevin Gausman (8-11)	#22	@ TB	Drew Rasmussen (14-5)	#16
Mon, May 18th	vs CLE	Slade Cecconi (4-7)	#201	vs ATL	JR Ritchie (1-2)	#282
Tue, May 19th	vs CLE	Parker Messick (11-8)	#33	vs ATL	Martin Perez (8-8)	#177
Wed, May 20th	vs CLE	Tanner Bibee (5-14)	#61	vs ATL	Chris Sale (13-9)	#5
Thu, May 21st	vs CLE	Joey Cantillo (9-7)	#75	vs ATL	Spencer Strider (4-2)	#301
Fri, May 22nd	@ BAL	Keegan Akin (0-1)		vs NYM	Tobias Myers (0-2)	#141
Sun, May 24th	@ BAL	Trevor Rogers (9-9)	#58	vs NYM	Christian Scott (4-4)	#41
Tue, May 26th	vs LAA	Jack Kochanowicz (2-5)		@ TOR	Braydon Fisher (3-4)	#128
Wed, May 27th	vs LAA	Jose Soriano (11-7)	#42	@ TOR	Kevin Gausman (8-11)	#22
Thu, May 28th	vs LAA	Grayson Rodriguez (4-5)	#99
Fri, May 29th	@ CWS	Brandon Eisert (2-2)	#230	@ NYM	Freddy Peralta (6-11)	#45
Sat, May 30th	@ CWS	Anthony Kay (9-7)	#152	@ NYM	Christian Scott (4-4)	#41
Sun, May 31st	@ CWS	Sean Burke (7-6)	#62	@ NYM	Nolan McLean (10-8)	#36
Mon, Jun 1st	@ TB	Griffin Jax (6-9)	#68	@ WSH	Cade Cavalli (12-5)	#43
Tue, Jun 2nd	@ TB	Steven Matz (5-4)	#222	@ WSH	Richard Lovelady (2-4)
Wed, Jun 3rd	@ TB	Nick Martinez (13-4)	#89	@ WSH	Andrew Alvarez (2-6)	#132
Fri, Jun 5th	vs SEA	Bryan Woo (9-9)	#13	vs TB	Drew Rasmussen (14-5)	#16
Sat, Jun 6th	vs SEA	Bryce Miller (4-8)	#44	vs TB	Shane McClanahan (10-6)	#38
Sun, Jun 7th	vs SEA	Luis Castillo (4-10)	#105	vs TB	Griffin Jax (6-9)	#68
Tue, Jun 9th	vs MIN	Taj Bradley (10-6)	#46	vs ARI	Zac Gallen (3-9)	#146
Wed, Jun 10th	vs MIN	Mike Paredes (0-3)	#392	vs ARI	Ryne Nelson (3-5)	#205
Thu, Jun 11th	vs MIN	Zebby Matthews (9-8)	#101	vs ARI	Merrill Kelly (9-12)	#162
Fri, Jun 12th	@ CLE	Tanner Bibee (5-14)	#61	@ PIT	Braxton Ashcraft (14-5)	#30
Sat, Jun 13th	@ CLE	Joey Cantillo (9-7)	#75	@ PIT	Bubba Chandler (6-9)	#123
Mon, Jun 15th	@ HOU	Kai-Wei Teng (5-6)	#165	@ PHI	Zack Wheeler (11-5)	#12
Tue, Jun 16th	@ HOU	Hunter Brown (4-3)	#25	@ PHI	Jesus Luzardo (12-5)	#4
Wed, Jun 17th	@ HOU	Peter Lambert (8-7)	#144	@ PHI	Andrew Painter (3-8)	#172
Fri, Jun 19th	vs CWS	Brandon Eisert (2-2)	#230	vs SF	Landen Roupp (8-13)	#98
Sat, Jun 20th	vs CWS	Sean Newcomb (2-3)	#178	vs SF	Trevor McDonald (3-7)
Sun, Jun 21st	vs CWS	Davis Martin (9-6)	#109	vs SF	Logan Webb (8-8)	#21
Mon, Jun 22nd	vs NYY	Gerrit Cole (7-7)	#19	vs TEX	Tyler Alexander (5-2)	#118
Tue, Jun 23rd	vs NYY	Carlos Rodon (4-3)	#49	vs TEX	Cal Quantrill (6-5)	#157
Wed, Jun 24th	vs NYY	Ryan Weathers (5-8)	#209	vs TEX	Jacob deGrom (10-9)	#8
Thu, Jun 25th	vs HOU	Tatsuya Imai (6-4)	#115
Fri, Jun 26th	vs HOU	Spencer Arrighetti (7-7)	#168	@ STL	Michael McGreevy (5-9)	#111
Sat, Jun 27th	vs HOU	Kai-Wei Teng (5-6)	#165	@ STL	Andre Pallante (12-6)	#227
Sun, Jun 28th	vs HOU	Hunter Brown (4-3)	#25	@ STL	Kyle Leahy (10-4)	#104
Mon, Jun 29th	@ NYY	Ryan Weathers (5-8)	#209	@ COL	Sean Sullivan (0-3)	#422
Tue, Jun 30th	@ NYY	Cam Schlittler (12-6)	#15	@ COL	Tanner Gordon (1-4)	#266
Wed, Jul 1st	@ NYY	Will Warren (9-6)	#73	@ COL	Kyle Freeland (4-10)	#409
Thu, Jul 2nd	@ TEX	Nathan Eovaldi (10-9)	#74	@ COL	Michael Lorenzen (3-11)	#164
Sat, Jul 4th	@ TEX	Cal Quantrill (6-5)	#157	@ ATH	Aaron Civale (6-7)	#192
Sun, Jul 5th	@ TEX	Kumar Rocker (5-10)	#114	@ ATH	Gage Jump (6-9)	#97
Tue, Jul 7th	vs ATH	J.T. Ginn (9-8)	#154	vs SEA	Bryan Woo (9-9)	#13
Wed, Jul 8th	vs ATH	Jeffrey Springs (3-13)	#193	vs SEA	George Kirby (9-10)	#23
Thu, Jul 9th	vs ATH	Jose Suarez	#243	vs SEA	Bryce Miller (4-8)	#44
Fri, Jul 10th	vs PHI	Aaron Nola (6-10)	#55	vs CLE	Parker Messick (11-8)	#33
Sat, Jul 11th	vs PHI	Cristopher Sanchez (16-4)	#3	vs CLE	Tanner Bibee (5-14)	#61
Sun, Jul 12th	vs PHI	Zack Wheeler (11-5)	#12	vs CLE	Joey Cantillo (9-7)	#75
Fri, Jul 17th	@ LAA	Reid Detmers (4-8)	#31	@ MIL	Logan Henderson (9-2)	#29
Sat, Jul 18th	@ LAA	Grayson Rodriguez (4-5)	#99	@ MIL	Shane Drohan (7-5)	#106
Sun, Jul 19th	@ LAA	Ryan Johnson (3-7)	#185	@ MIL	Robert Gasser (4-5)	#93
Mon, Jul 20th	@ CHC	Jameson Taillon (2-6)	#153	@ HOU	Ronel Blanco (0-1)	#221
Tue, Jul 21st	@ CHC	David Peterson (7-7)	#108	@ HOU	Tatsuya Imai (6-4)	#115
Wed, Jul 22nd	@ CHC	Colin Rea (8-8)	#247	@ HOU	Peter Lambert (8-7)	#144
Thu, Jul 23rd	vs KC	Randy Dobnak (2-2)	#417
Fri, Jul 24th	vs KC	Beck Way (1-1)	#406	vs SD	German Marquez (4-2)	#368
Sat, Jul 25th	vs KC	Michael Wacha (8-8)	#81	vs SD	Randy Vasquez (10-6)	#182
Sun, Jul 26th	vs KC	Luinder Avila (5-4)		vs SD	Walker Buehler (8-6)	#170
Mon, Jul 27th	vs BAL	Kyle Bradish (7-12)	#57	vs PHI	Zack Wheeler (11-5)	#12
Tue, Jul 28th	vs BAL	Dean Kremer (2-5)	#90	vs PHI	Aaron Nola (6-10)	#55
Wed, Jul 29th	vs BAL	Trevor Rogers (9-9)	#58	vs PHI	Jesus Luzardo (12-5)	#4
Fri, Jul 31st	@ ATH	Jeffrey Springs (3-13)	#193	@ NYM	Kodai Senga (0-9)	#70
Sat, Aug 1st	@ ATH	Jack Perkins (3-10)	#124	@ NYM	Zac Thornton (3-4)	#127
Sun, Aug 2nd	@ ATH	Gage Jump (6-9)	#97	@ NYM	Robert Stock (1-3)	#167
Tue, Aug 4th	@ SEA	Emerson Hancock (7-8)	#130	@ ATL	Grant Holmes (9-5)	#161
Wed, Aug 5th	@ SEA	Bryan Woo (9-9)	#13	@ ATL	Bryce Elder (8-8)	#158
Thu, Aug 6th	@ SEA	Bryce Miller (4-8)	#44	@ ATL	Martin Perez (8-8)	#177
Fri, Aug 7th	@ SF	JT Brubaker		vs LAA	George Klassen (2-2)	#303
Sat, Aug 8th	@ SF	Landen Roupp (8-13)	#98	vs LAA	Walbert Urena (9-9)	#188
Sun, Aug 9th	@ SF	Logan Webb (8-8)	#21	vs LAA	Grayson Rodriguez (4-5)	#99
Tue, Aug 11th	vs CLE	Tanner Bibee (5-14)	#61	vs PIT	Paul Skenes (9-11)	#6
Wed, Aug 12th	vs CLE	Foster Griffin (15-4)	#40	vs PIT	Carmen Mlodzinski (7-6)	#107
Thu, Aug 13th	vs CLE	Parker Messick (11-8)	#33	vs PIT	Braxton Ashcraft (14-5)	#30
Fri, Aug 14th	vs CWS	Sean Newcomb (2-3)	#178	@ CIN	Chase Burns (15-3)	#24
Sat, Aug 15th	vs CWS	Anthony Kay (9-7)	#152	@ CIN	Brady Singer (5-13)	#176
Sun, Aug 16th	vs CWS	Sean Burke (7-6)	#62	@ CIN	Nick Lodolo (3-3)	#126
Mon, Aug 17th	@ PIT	Carmen Mlodzinski (7-6)	#107	@ PHI	Cristopher Sanchez (16-4)	#3
Tue, Aug 18th	@ PIT	Braxton Ashcraft (14-5)	#30	@ PHI	Zack Wheeler (11-5)	#12
Wed, Aug 19th	@ PIT	Paul Skenes (9-11)	#6	@ PHI	Aaron Nola (6-10)	#55
Fri, Aug 21st	@ KC	Noah Cameron (9-8)	#95	vs WSH	Brad Lord (5-2)	#137
Sat, Aug 22nd	@ KC	Michael Wacha (8-8)	#81	vs WSH	Jake Irvin (2-8)	#155
Sun, Aug 23rd	@ KC	Daniel Lynch (4-4)	#166	vs WSH	Jackson Kent (1-2)	#160
Mon, Aug 24th	vs TB	Drew Rasmussen (14-5)	#16	vs BOS	Ranger Suarez (5-4)	#32
Tue, Aug 25th	vs TB	Casey Legumina (2-2)	#304	vs BOS	Payton Tolle (8-6)	#27
Wed, Aug 26th	vs TB	Freddy Peralta (6-11)	#45	vs BOS	Sonny Gray (16-4)	#34
Fri, Aug 28th	vs LAD	Tarik Skubal (8-7)	#2	@ WSH	Jackson Kent (1-2)	#160
Sat, Aug 29th	vs LAD	Blake Snell (2-1)	#14	@ WSH	Cade Cavalli (12-5)	#43
Sun, Aug 30th	vs LAD	Tyler Glasnow (4-0)	#18	@ WSH	Andrew Alvarez (2-6)	#132
Mon, Aug 31st	@ MIN	Taj Bradley (10-6)	#46	@ WSH	Will Dion (1-1)	#191
Tue, Sep 1st	@ MIN	Andrew Morris (4-7)	#125	@ KC	Randy Dobnak (2-2)	#417
Wed, Sep 2nd	@ MIN	Dean Kremer (2-5)	#90	@ KC	Noah Cameron (9-8)	#95
Fri, Sep 4th	@ CLE			vs CHC	Shota Imanaga (8-10)	#28
Sat, Sep 5th	@ CLE	Parker Messick (11-8)	#33	vs CHC	Clay Holmes (6-6)	#72
Sun, Sep 6th	@ CLE	Gavin Williams (12-7)	#20	vs CHC	Matthew Boyd (8-3)	#53
Mon, Sep 7th	vs MIN	Joe Ryan (6-8)	#51	vs NYM	Robert Stock (1-3)	#167
Tue, Sep 8th	vs MIN	Dean Kremer (2-5)	#90	vs NYM	Sean Manaea (4-6)	#64
Wed, Sep 9th	vs MIN			vs NYM	Nolan McLean (10-8)	#36
Fri, Sep 11th	vs COL			vs LAD
Sat, Sep 12th	vs COL			vs LAD
Sun, Sep 13th	vs COL			vs LAD
Mon, Sep 14th	@ TOR			@ ARI
Tue, Sep 15th	@ TOR			@ ARI
Wed, Sep 16th	@ TOR			@ ARI
Thu, Sep 17th	@ CWS
Fri, Sep 18th	@ CWS			@ SD
Sat, Sep 19th	@ CWS			@ SD
Sun, Sep 20th	@ CWS			@ SD
Mon, Sep 21st	vs WSH
Tue, Sep 22nd	vs WSH			@ CHC
Wed, Sep 23rd	vs WSH			@ CHC
Fri, Sep 25th	vs PIT			vs ATL
Sat, Sep 26th	vs PIT			vs ATL
Sun, Sep 27th	vs PIT			vs ATL
Sun, Mar 29th				vs COL	Jose Quintana (2-3)	#429
Mon, Apr 13th				@ ATL	Grant Holmes (9-5)	#161
Mon, Apr 27th				@ LAD	Yoshinobu Yamamoto (12-8)	#9
Thu, May 7th				vs BAL	Cade Povich (2-1)	#203
Sat, May 23rd				vs NYM	Freddy Peralta (6-11)	#45
Mon, May 25th				@ TOR	Trey Yesavage (5-5)	#211
Sun, Jun 14th				@ PIT	Paul Skenes (9-11)	#6
Fri, Jul 3rd				@ ATH	Jack Perkins (3-10)	#124
Thu, Jul 30th				@ NYM	Nolan McLean (10-8)	#36
Thu, Sep 3rd				@ KC	Michael Wacha (8-8)	#81
Thu, Sep 24th				@ CHC