Justin Slaten or Riley O'Brien

Baseball Stats Comparison

Stats
Projections
News & Notes
Schedule

Justin Slaten or Riley O'Brien Player Statistics
	Riley O'Brien RP - STL	Justin Slaten RP - BOS
2026 Stats


Games Played	66	36

Games Started	0	0

Innings Pitched	64.0	31.1

Wins	3	2

Losses	9	4

Saves	38	0

Blown Saves	8	1

Holds	1	17

Hits Allowed	53	35

Earned Runs	29	16

Home Runs Allowed	5	4

Strikeouts	64	39

Walks	29	8

ERA	4.08	4.60

WHIP	1.28	1.37

Justin Slaten or Riley O'Brien Player Projections
	Riley O'Brien RP - STL	Justin Slaten RP - BOS
2026 Projections


Games Played	59	54

Games Started	0	0

Innings Pitched	60.2	57.2

Wins	3	4

Losses	3	3

Saves	14	1

Blown Saves	1	1

Holds	11	12

Hits Allowed	52	53

Earned Runs	26	26

Home Runs Allowed	5	7

Strikeouts	63	54

Walks	27	19

ERA	3.92	4.14

WHIP	1.31	1.25

Justin Slaten or Riley O'Brien Player Notes
	Riley O'Brien RP - STL	Justin Slaten RP - BOS
News
	Riley O'Brien needed just six pitches to record a scoreless frame and earn the save in Sunday's 5-3 win over the Nationals. Chase Davis Mon, Sep 21st	Red Sox interim manager Chad Tracy said Justin Slaten has been shut down for the season. Ari Koslow Tue, Sep 15th
	Riley O'Brien struck out two batters while allowing one hit and one walk in a scoreless appearance to earn the save in Monday's 2-1 win over the Giants. Chase Davis Tue, Sep 15th	Red Sox interim manager Chad Tracy said that Justin Slaten “still feels occasional elbow soreness.” Ari Koslow Wed, Sep 2nd
	Riley O'Brien allowed two earned runs on one hit and one walk while striking out two across one inning in Saturday's 6-5 loss to the White Sox. Chase Davis Sun, Sep 13th	Justin Slaten is out to 120 feet playing catch. Ari Koslow Tue, Sep 1st
	Riley O'Brien struck out two batters while allowing one hit in a scoreless outing to earn the save in Friday's 7-6 win over the Rockies. Chase Davis Sat, Sep 5th	Justin Slaten had an MRI returned that showed no structural damage. Ari Koslow Tue, Aug 18th
	Riley O'Brien struck out one batter while allowing the ghost runner to score to earn the save in Wednesday's 8-6 win over the Dodgers. Chase Davis Thu, Sep 3rd	Red Sox interim manager Chad Tracy said Justin Slaten underwent an MRI on Monday. Ari Koslow Mon, Aug 17th
Notes
There are no recent notes for these players

Justin Slaten or Riley O'Brien Player Schedules
Date	Opp	Opp Pitcher	VBR	Opp	Opp Pitcher	VBR
	Riley O'Brien RP - STL			Justin Slaten RP - BOS
Thu, Mar 26th	vs TB	Drew Rasmussen (16-5)	#18	@ CIN	Andrew Abbott (6-11)	#131
Sat, Mar 28th	vs TB	Joe Boyle (0-1)	#199	@ CIN	Brady Singer (6-15)	#201
Sun, Mar 29th	vs TB	Steven Matz (5-6)	#207	@ CIN	Rhett Lowder (6-12)	#293
Mon, Mar 30th	vs NYM	Clay Holmes (6-8)	#82	@ HOU	Lance McCullers Jr. (2-3)
Tue, Mar 31st	vs NYM	Kodai Senga (0-9)	#69	@ HOU	Hunter Brown (6-3)	#20
Wed, Apr 1st	vs NYM	Freddy Peralta (9-11)	#56	@ HOU	Mike Burrows (4-9)	#225
Fri, Apr 3rd	@ DET	Framber Valdez (10-12)	#74	vs SD	Michael King (12-10)	#43
Sat, Apr 4th	@ DET	Jack Flaherty (3-8)	#93	vs SD	Randy Vasquez (10-6)	#280
Sun, Apr 5th	@ DET	Keider Montero (10-9)	#107	vs SD	Walker Buehler (9-6)	#139
Mon, Apr 6th	@ WSH	Zack Littell (8-8)	#214	vs MIL	Brandon Woodruff (2-2)
Tue, Apr 7th	@ WSH	Cade Cavalli (13-5)	#48	vs MIL	Jacob Misiorowski (15-5)	#12
Wed, Apr 8th	@ WSH	Miles Mikolas (3-9)		vs MIL	Shane Drohan (7-5)	#70
Fri, Apr 10th	vs BOS	Connelly Early (7-5)	#72	@ STL	Dustin May (7-9)	#42
Sat, Apr 11th	vs BOS	Ranger Suarez (8-5)	#44	@ STL	Kyle Leahy (10-5)	#64
Sun, Apr 12th	vs BOS	Brayan Bello (6-7)	#109	@ STL	Andre Pallante (12-8)	#94
Mon, Apr 13th	vs CLE	Gavin Williams (14-8)	#17	@ MIN	Bailey Ober (7-6)	#110
Tue, Apr 14th	vs CLE	Joey Cantillo (11-9)	#58	@ MIN	Mick Abel (1-2)
Wed, Apr 15th	vs CLE	Slade Cecconi (5-7)	#230	@ MIN	Simeon Woods Richardson (2-7)
Fri, Apr 17th	@ HOU	Peter Lambert (8-10)	#151	vs DET	Casey Mize (6-9)	#38
Sat, Apr 18th	@ HOU	Lance McCullers Jr. (2-3)		vs DET	Tarik Skubal (11-7)	#1
Sun, Apr 19th	@ HOU	Mike Burrows (4-9)	#225	vs DET	Framber Valdez (10-12)	#74
Mon, Apr 20th	@ MIA	Max Meyer (9-1)		vs DET	Jack Flaherty (3-8)	#93
Tue, Apr 21st	@ MIA	Chris Paddack (0-7)		vs NYY	Luis Gil (1-2)	#166
Wed, Apr 22nd	@ MIA	Janson Junk (6-9)	#77	vs NYY	Max Fried (5-5)	#13
Thu, Apr 23rd				vs NYY	Cam Schlittler (14-6)	#14
Fri, Apr 24th	vs SEA	George Kirby (9-11)	#15	@ BAL	Brandon Young (9-5)	#92
Sat, Apr 25th	vs SEA	Bryan Woo (12-10)	#3	@ BAL	Trevor Rogers (10-11)	#39
Sun, Apr 26th	vs SEA	Emerson Hancock (7-8)	#174	@ BAL	Kyle Bradish (7-14)
Mon, Apr 27th	@ PIT	Mason Montgomery (6-3)	#132	@ TOR	Dylan Cease (11-6)	#128
Tue, Apr 28th	@ PIT	Braxton Ashcraft (14-6)		@ TOR	Trey Yesavage (5-5)	#76
Wed, Apr 29th	@ PIT	Bubba Chandler (8-9)	#75	@ TOR	Eric Lauer (8-7)
Fri, May 1st	vs LAD	Emmet Sheehan (5-8)	#98	vs HOU	Mike Burrows (4-9)	#225
Sat, May 2nd	vs LAD	Roki Sasaki (5-5)	#183	vs HOU	Spencer Arrighetti (9-9)	#254
Sun, May 3rd	vs LAD	Justin Wrobleski (12-5)	#51	vs HOU	Cody Bolton (0-1)	#314
Mon, May 4th	vs MIL	Chad Patrick (9-4)	#186	@ DET	Tyler Holton (2-5)	#105
Tue, May 5th				@ DET	Framber Valdez (10-12)	#74
Wed, May 6th	vs MIL	Brandon Sproat (3-7)	#317	@ DET	Jack Flaherty (3-8)	#93
Thu, May 7th	@ SD	Michael King (12-10)	#43	vs TB	Griffin Jax (8-10)	#40
Fri, May 8th	@ SD	Griffin Canning (4-9)	#203	vs TB	Jesse Scholtens (5-3)	#285
Sun, May 10th	@ SD	Walker Buehler (9-6)	#139	vs TB	Nick Martinez (15-5)	#85
Tue, May 12th	@ ATH	Jeffrey Springs (4-14)	#324	vs PHI	Zack Wheeler (13-5)	#7
Wed, May 13th	@ ATH	J.T. Ginn (9-8)		vs PHI	Andrew Painter (3-10)	#164
Thu, May 14th	@ ATH	Jacob Lopez (6-5)	#267	vs PHI	Jesus Luzardo (14-5)
Fri, May 15th	vs KC	Michael Wacha (9-9)	#97	@ ATL	Spencer Strider (4-2)
Sat, May 16th	vs KC	Noah Cameron (9-8)	#81	@ ATL	Bryce Elder (8-8)
Sun, May 17th	vs KC	Stephen Kolek (4-3)		@ ATL	Grant Holmes (10-5)	#148
Mon, May 18th				@ KC	Seth Lugo (7-9)	#218
Tue, May 19th	vs PIT	Mitch Keller (6-8)		@ KC	Bailey Falter (0-2)
Wed, May 20th	vs PIT	Carmen Mlodzinski (8-7)	#84	@ KC	Michael Wacha (9-9)	#97
Fri, May 22nd				vs MIN	Connor Prielipp (6-7)	#59
Sat, May 23rd	@ CIN	Chase Petty (1-2)	#309	vs MIN	Taj Bradley (12-6)	#88
Sun, May 24th				vs MIN	Bailey Ober (7-6)	#110
Tue, May 26th	@ MIL	Kyle Harrison (10-5)	#66	vs ATL	Spencer Strider (4-2)
Wed, May 27th	@ MIL	Chad Patrick (9-4)	#186	vs ATL	Bryce Elder (8-8)
Thu, May 28th				vs ATL	Chris Sale (14-9)	#2
Fri, May 29th	vs CHC	Shota Imanaga (11-10)	#31	@ CLE	Slade Cecconi (5-7)	#230
Sat, May 30th	vs CHC	Ben Brown (4-2)		@ CLE	Parker Messick (12-9)	#35
Sun, May 31st	vs CHC	Jordan Wicks (0-2)		@ CLE	Tanner Bibee (6-15)	#71
Tue, Jun 2nd	vs TEX	Nathan Eovaldi (11-10)	#65	vs BAL	Shane Baz (6-15)	#63
Wed, Jun 3rd	vs TEX	MacKenzie Gore (8-11)	#27	vs BAL	Chris Bassitt (9-5)	#95
Thu, Jun 4th				vs BAL	Trevor Rogers (10-11)	#39
Fri, Jun 5th	vs CIN	Brady Singer (6-15)	#201	@ NYY	Ryan Weathers (5-8)	#171
Sun, Jun 7th	vs CIN	Rhett Lowder (6-12)	#293	@ NYY	Cam Schlittler (14-6)	#14
Mon, Jun 8th				@ TB	Ian Seymour (9-7)	#57
Tue, Jun 9th	@ NYM	Freddy Peralta (9-11)	#56	@ TB	Nick Martinez (15-5)	#85
Wed, Jun 10th	@ NYM	Austin Warren		@ TB	Drew Rasmussen (16-5)	#18
Fri, Jun 12th	@ MIN	Joe Ryan (6-10)	#36	vs TEX	Jack Leiter (3-7)
Sat, Jun 13th	@ MIN	Connor Prielipp (6-7)	#59	vs TEX	Jacob deGrom (11-10)	#5
Sun, Jun 14th	@ MIN	Taj Bradley (12-6)	#88	vs TEX	Nathan Eovaldi (11-10)	#65
Tue, Jun 16th	vs SD	Michael King (12-10)	#43	vs TOR	Dylan Cease (11-6)	#128
Wed, Jun 17th	vs SD	Bradgley Rodriguez (4-3)	#245	vs TOR	Braydon Fisher (3-4)	#195
Thu, Jun 18th	@ KC	Noah Cameron (9-8)	#81	vs TOR	Trey Yesavage (5-5)	#76
Fri, Jun 19th	@ KC	Seth Lugo (7-9)	#218	@ SEA	Bryce Miller (4-9)	#22
Sat, Jun 20th				@ SEA	Emerson Hancock (7-8)	#174
Sun, Jun 21st	@ KC	Stephen Kolek (4-3)		@ SEA	Logan Gilbert (12-11)	#4
Mon, Jun 22nd	vs ARI	Merrill Kelly (10-14)	#182	@ COL	Ryan Feltner (6-10)	#342
Tue, Jun 23rd	vs ARI	Eduardo Rodriguez (16-7)	#86	@ COL	Sean Sullivan (0-3)	#277
Wed, Jun 24th	vs ARI	Mitch Bratt (1-3)		@ COL	Kyle Freeland (4-11)	#248
Thu, Jun 25th				vs NYY	Cam Schlittler (14-6)	#14
Fri, Jun 26th	vs MIA	Max Meyer (9-1)		vs NYY	Will Warren (10-6)	#89
Sat, Jun 27th	vs MIA	Ryan Gusto (1-5)	#106	vs NYY	Gerrit Cole (10-9)	#25
Sun, Jun 28th	vs MIA	Tyler Phillips (5-6)	#136	vs NYY	Carlos Rodon (7-3)	#33
Mon, Jun 29th				vs WSH	Miles Mikolas (3-9)
Tue, Jun 30th	@ ATL	Martin Perez (9-9)	#119	vs WSH	Cade Cavalli (13-5)	#48
Wed, Jul 1st	@ ATL	Reynaldo Lopez (4-5)		vs WSH	Brad Lord (5-2)	#227
Fri, Jul 3rd	@ CHC	David Peterson (9-8)	#160	@ LAA	Reid Detmers (6-8)	#34
Sat, Jul 4th	@ CHC	Shota Imanaga (11-10)	#31	@ LAA	Sam Aldegheri (3-4)	#313
Sun, Jul 5th	@ CHC	Javier Assad (6-1)	#206	@ LAA	Ryan Johnson (5-9)	#158
Tue, Jul 7th	vs MIL	Robert Gasser (5-5)	#60	@ CWS	Noah Schultz (4-9)	#191
Wed, Jul 8th	vs MIL	Kyle Harrison (10-5)	#66	@ CWS	Davis Martin (9-7)	#96
Thu, Jul 9th	vs MIL	Logan Henderson (11-3)	#28	@ CWS	Anthony Kay (9-9)	#83
Fri, Jul 10th	vs ATL	Chris Sale (14-9)	#2	@ NYM	Nolan McLean (12-10)	#16
Sat, Jul 11th	vs ATL	Reynaldo Lopez (4-5)		@ NYM	Freddy Peralta (9-11)	#56
Sun, Jul 12th	vs ATL	Danny Young		@ NYM	Zac Thornton (5-6)	#144
Fri, Jul 17th	@ ARI	Merrill Kelly (10-14)	#182	vs TB	Mason Englert (0-4)	#143
Sat, Jul 18th	@ ARI	Brandon Pfaadt (7-3)	#112	vs TB	Ian Seymour (9-7)	#57
Sun, Jul 19th	@ ARI	Eduardo Rodriguez (16-7)	#86	vs TB	Shane McClanahan (10-7)
Mon, Jul 20th	@ LAA	Jose Soriano (12-8)	#19	vs BAL	Shane Baz (6-15)	#63
Wed, Jul 22nd	@ LAA	Reid Detmers (6-8)	#34	vs BAL	Kyle Bradish (7-14)
Fri, Jul 24th	vs CIN	Rhett Lowder (6-12)	#293	vs TOR	Trey Yesavage (5-5)	#76
Sat, Jul 25th	vs CIN	Hunter Greene (2-2)		vs TOR	Dylan Cease (11-6)	#128
Sun, Jul 26th	vs CIN	Andrew Abbott (6-11)	#131	vs TOR	Kevin Gausman (9-12)	#21
Mon, Jul 27th	vs CHC	David Peterson (9-8)	#160	@ ATH	Jack Perkins (3-12)	#126
Tue, Jul 28th	vs CHC	Colin Rea (8-8)	#278	@ ATH	Gage Jump (6-11)
Wed, Jul 29th	vs CHC	Matthew Boyd (10-5)	#50	@ ATH	Jacob Lopez (6-5)	#267
Thu, Jul 30th	vs CHC	Javier Assad (6-1)	#206	@ ATH	Mason Barnett (1-4)	#339
Fri, Jul 31st	@ TOR	Dylan Cease (11-6)	#128	@ LAD	Edgardo Henriquez
Sat, Aug 1st	@ TOR	Kevin Gausman (9-12)	#21	@ LAD	Yoshinobu Yamamoto (14-9)	#6
Sun, Aug 2nd	@ TOR	Max Scherzer (3-9)	#147	@ LAD	Emmet Sheehan (5-8)	#98
Tue, Aug 4th	@ NYY	Ryan Weathers (5-8)	#171	vs CWS	Davis Martin (9-7)	#96
Wed, Aug 5th	@ NYY	Will Warren (10-6)	#89	vs CWS	Sean Burke (10-7)	#101
Thu, Aug 6th				vs CWS	Luis Castillo (4-11)	#161
Fri, Aug 7th	vs COL	Ryan Feltner (6-10)	#342	vs ATH	Jack Perkins (3-12)	#126
Sat, Aug 8th	vs COL	Kyle Freeland (4-11)	#248	vs ATH	Gage Jump (6-11)
Sun, Aug 9th	vs COL	Michael Lorenzen (3-13)		vs ATH	J.T. Ginn (9-8)
Mon, Aug 10th	vs PHI	Andrew Painter (3-10)	#164	@ TOR	Jameson Taillon (2-6)
Tue, Aug 11th	vs PHI	Cristopher Sanchez (18-6)	#11	@ TOR	Dylan Cease (11-6)	#128
Wed, Aug 12th	vs PHI	Zack Wheeler (13-5)	#7	@ TOR	Jose Soriano (12-8)	#19
Thu, Aug 13th				@ TOR	Max Scherzer (3-9)	#147
Fri, Aug 14th	@ CHC	Clay Holmes (6-8)	#82	@ PIT	Bubba Chandler (8-9)	#75
Sat, Aug 15th	@ CHC	Matthew Boyd (10-5)	#50	@ PIT	Jared Jones (5-6)	#26
Sun, Aug 16th	@ CHC	Edward Cabrera (5-5)	#197	@ PIT	Lake Bachar (1-4)	#146
Mon, Aug 17th	@ CIN	Rhett Lowder (6-12)	#293	vs ARI	Mitch Bratt (1-3)
Tue, Aug 18th	@ CIN	Andrew Abbott (6-11)	#131	vs ARI	Merrill Kelly (10-14)	#182
Wed, Aug 19th	@ CIN	Chase Burns (15-3)		vs ARI	Brandon Pfaadt (7-3)	#112
Fri, Aug 21st	@ PHI	Jesus Luzardo (14-5)		vs SF	Logan Webb (8-9)
Sat, Aug 22nd	@ PHI	Andrew Painter (3-10)	#164	vs SF	Blade Tidwell (1-2)	#297
Sun, Aug 23rd	@ PHI	Cristopher Sanchez (18-6)	#11	vs SF	Matt Wilkinson (1-3)	#231
Mon, Aug 24th				@ MIA	Sandy Alcantara (13-11)	#91
Tue, Aug 25th	vs BAL	Chris Bassitt (9-5)	#95	@ MIA	Tyler Phillips (5-6)	#136
Wed, Aug 26th	vs BAL	Kyle Bradish (7-14)		@ MIA	Ryan Gusto (1-5)	#106
Fri, Aug 28th	vs PIT	Jared Jones (5-6)	#26	@ NYY	Cam Schlittler (14-6)	#14
Sat, Aug 29th	vs PIT	Lake Bachar (1-4)	#146	@ NYY	Max Fried (5-5)	#13
Sun, Aug 30th	vs PIT	Braxton Ashcraft (14-6)		@ NYY	Will Warren (10-6)	#89
Mon, Aug 31st				vs SEA	George Kirby (9-11)	#15
Tue, Sep 1st	@ LAD	Eric Lauer (8-7)		vs SEA	Bryan Woo (12-10)	#3
Wed, Sep 2nd	@ LAD	Yoshinobu Yamamoto (14-9)	#6	vs SEA	Bryce Miller (4-9)	#22
Thu, Sep 3rd	@ LAD	Tarik Skubal (11-7)	#1	@ BAL	Brandon Young (9-5)	#92
Fri, Sep 4th	@ COL	Ryan Feltner (6-10)	#342	@ BAL	Shane Baz (6-15)	#63
Sat, Sep 5th	@ COL	Mason Adams (0-2)	#249	@ BAL	Chris Bassitt (9-5)	#95
Sun, Sep 6th	@ COL	Tanner Gordon (1-6)	#287	@ BAL	Kyle Bradish (7-14)
Mon, Sep 7th	@ SF	Logan Webb (8-9)		vs LAA	Grayson Rodriguez (5-8)	#123
Tue, Sep 8th	@ SF	Landen Roupp (9-14)	#102	vs LAA	Reid Detmers (6-8)	#34
Wed, Sep 9th	@ SF	Blade Tidwell (1-2)	#297	vs LAA	Ryan Johnson (5-9)	#158
Fri, Sep 11th	vs CWS	Anthony Kay (9-9)	#83	vs KC	Seth Lugo (7-9)	#218
Sat, Sep 12th	vs CWS	Sean Newcomb (2-5)	#219	vs KC	Randy Dobnak (3-5)	#334
Sun, Sep 13th	vs CWS	David Sandlin (3-2)	#135	vs KC	Noah Cameron (9-8)	#81
Tue, Sep 15th	vs SF	Blade Tidwell (1-2)	#297	@ TEX	Jacob deGrom (11-10)	#5
Wed, Sep 16th	vs SF	Anthony Molina (3-2)	#114	@ TEX	MacKenzie Gore (8-11)	#27
Thu, Sep 17th				@ TEX	Tyler Alexander (5-2)	#130
Fri, Sep 18th	vs WSH	Cade Cavalli (13-5)	#48	@ TB	Ian Seymour (9-7)	#57
Sat, Sep 19th	vs WSH	Andrew Alvarez (2-6)	#124	@ TB	Freddy Peralta (9-11)	#56
Sun, Sep 20th	vs WSH	Jake Irvin (2-9)	#142	@ TB	Griffin Jax (8-10)	#40
Tue, Sep 22nd	@ PIT	Jared Jones (5-6)	#26	vs CLE	Parker Messick (12-9)	#35
Wed, Sep 23rd	@ PIT	Lake Bachar (1-4)	#146	vs CLE	Foster Griffin (15-6)	#37
Thu, Sep 24th	@ PIT	Paul Skenes (10-11)	#9	vs CLE	Daniel Espino (0-0)	#145
Fri, Sep 25th	@ MIL	Robert Gasser (5-5)	#60	vs CHC	David Peterson (9-8)	#160
Sat, Sep 26th	@ MIL	Dustin May (7-9)	#42	vs CHC	Matthew Boyd (10-5)	#50
Thu, Apr 30th	@ PIT	Paul Skenes (10-11)	#9
Sat, May 9th	@ SD	Randy Vasquez (10-6)	#280
Thu, May 21st	vs PIT	Braxton Ashcraft (14-6)
Mon, May 25th	@ MIL	Jacob Misiorowski (15-5)	#12
Mon, Jun 1st	vs TEX	Jacob deGrom (11-10)	#5
Sat, Jun 6th	vs CIN	Nick Lodolo (3-6)	#153
Thu, Jun 11th	@ NYM	Christian Scott (4-5)	#29
Mon, Jun 15th	vs SD	Wandy Peralta (3-3)	#301
Thu, Jul 2nd	@ ATL	Hurston Waldrep (0-1)
Mon, Jul 6th	vs MIL	Shane Drohan (7-5)	#70
Tue, Jul 21st	@ LAA	Walbert Urena (9-11)	#113
Thu, Jul 23rd	vs ARI	Brandon Pfaadt (7-3)	#112
Mon, Aug 3rd	@ NYY	Cam Schlittler (14-6)	#14
Thu, Aug 20th	@ CIN	Brady Singer (6-15)	#201
Thu, Aug 27th	vs BAL	Trevor Rogers (10-11)	#39
Mon, Sep 14th	vs SF	Landen Roupp (9-14)	#102
Sun, Sep 27th	@ MIL	Jacob Misiorowski (15-5)	#12