Daison Acosta or Riley O'Brien

Baseball Stats Comparison

Stats
Projections
News & Notes
Schedule

Daison Acosta or Riley O'Brien Player Statistics
	Riley O'Brien RP - STL	Daison Acosta RP - SD
2026 Stats


Games Played	66	‐

Games Started	0	‐

Innings Pitched	64.0	‐

Wins	3	‐

Losses	9	‐

Saves	38	‐

Blown Saves	8	‐

Holds	1	‐

Hits Allowed	53	‐

Earned Runs	29	‐

Home Runs Allowed	5	‐

Strikeouts	64	‐

Walks	29	‐

ERA	4.08	‐

WHIP	1.28	‐

Daison Acosta or Riley O'Brien Player Projections
	Riley O'Brien RP - STL	Daison Acosta RP - SD
2026 Projections


Games Played	59	12

Games Started	0	0

Innings Pitched	60.2	12.6

Wins	3	1

Losses	3	0

Saves	14	0

Blown Saves	1	0

Holds	11	1

Hits Allowed	52	11

Earned Runs	26	6

Home Runs Allowed	5	2

Strikeouts	63	14

Walks	27	7

ERA	3.92	4.17

WHIP	1.31	1.38

Daison Acosta or Riley O'Brien Player Notes
	Riley O'Brien RP - STL	Daison Acosta RP - SD
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	San Diego signed Acosta to a one-year contract in December. He posted a 4.71 ERA and 1.62 WHIP over 21.0 innings at Triple-A Rochester last season. Bruno Mulé Tue, Mar 10th
	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
	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
	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
	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
Notes
There are no recent notes for these players

Daison Acosta or Riley O'Brien Player Schedules
Date	Opp	Opp Pitcher	VBR	Opp	Opp Pitcher	VBR
	Riley O'Brien RP - STL			Daison Acosta RP - SD
Thu, Mar 26th	vs TB	Drew Rasmussen (16-5)	#26	vs DET	Tarik Skubal (12-7)	#2
Fri, Mar 27th				vs DET	Framber Valdez (10-12)	#53
Sat, Mar 28th	vs TB	Joe Boyle (0-1)		vs DET	Jack Flaherty (3-8)	#179
Mon, Mar 30th	vs NYM	Clay Holmes (6-8)	#83	vs SF	Landen Roupp (9-14)
Tue, Mar 31st	vs NYM	Kodai Senga (0-9)	#163	vs SF	Logan Webb (8-9)
Wed, Apr 1st	vs NYM	Freddy Peralta (10-11)	#51	vs SF	Adrian Houser (4-7)
Fri, Apr 3rd	@ DET	Framber Valdez (10-12)	#53	@ BOS	Sonny Gray (18-5)	#45
Sat, Apr 4th	@ DET	Jack Flaherty (3-8)	#179	@ BOS	Connelly Early (7-5)	#76
Sun, Apr 5th	@ DET	Keider Montero (10-9)	#188	@ BOS	Ranger Suarez (8-5)	#70
Mon, Apr 6th	@ WSH	Zack Littell (8-8)		@ PIT	Bubba Chandler (8-10)	#59
Tue, Apr 7th	@ WSH	Cade Cavalli (13-5)	#34	@ PIT	Paul Skenes (10-11)	#14
Wed, Apr 8th	@ WSH	Miles Mikolas (3-9)		@ PIT	Mitch Keller (6-8)
Thu, Apr 9th				vs COL	Jimmy Herget (0-6)	#272
Fri, Apr 10th	vs BOS	Connelly Early (7-5)	#76	vs COL	Tomoyuki Sugano (12-12)	#263
Sat, Apr 11th	vs BOS	Ranger Suarez (8-5)	#70	vs COL	Ryan Feltner (7-10)	#230
Sun, Apr 12th	vs BOS	Brayan Bello (6-7)	#111	vs COL	Kyle Freeland (4-12)	#187
Tue, Apr 14th	vs CLE	Joey Cantillo (11-9)	#63	vs SEA	Bryan Woo (12-10)	#13
Wed, Apr 15th	vs CLE	Slade Cecconi (5-7)	#164	vs SEA	Emerson Hancock (7-8)	#135
Thu, Apr 16th				vs SEA	Luis Castillo (4-11)	#97
Fri, Apr 17th	@ HOU	Peter Lambert (8-10)	#185	@ LAA	Jose Soriano (12-8)	#23
Sat, Apr 18th	@ HOU	Lance McCullers Jr. (2-3)		@ LAA	Yusei Kikuchi (1-7)	#57
Sun, Apr 19th	@ HOU	Mike Burrows (4-9)		@ LAA	Walbert Urena (9-11)	#40
Tue, Apr 21st	@ MIA	Chris Paddack (0-7)		@ COL	Jimmy Herget (0-6)	#272
Wed, Apr 22nd	@ MIA	Janson Junk (6-9)	#138	@ COL	Tomoyuki Sugano (12-12)	#263
Thu, Apr 23rd				@ COL	Ryan Feltner (7-10)	#230
Sat, Apr 25th	vs SEA	Bryan Woo (12-10)	#13	@ ARI	Zac Gallen (3-9)	#216
Sun, Apr 26th	vs SEA	Emerson Hancock (7-8)	#135	@ ARI	Ryne Nelson (3-5)	#132
Mon, Apr 27th	@ PIT	Mason Montgomery (6-4)	#86	vs CHC	Matthew Boyd (10-5)	#78
Tue, Apr 28th	@ PIT	Braxton Ashcraft (14-6)		vs CHC	Edward Cabrera (5-5)	#126
Wed, Apr 29th	@ PIT	Bubba Chandler (8-10)	#59	vs CHC	Jameson Taillon (2-6)
Fri, May 1st	vs LAD	Emmet Sheehan (5-8)	#65	vs CWS	Noah Schultz (4-9)	#154
Sat, May 2nd	vs LAD	Roki Sasaki (5-5)	#102	vs CWS	Sean Burke (11-7)	#58
Sun, May 3rd	vs LAD	Justin Wrobleski (12-5)	#50	vs CWS	Anthony Kay (10-9)	#121
Mon, May 4th	vs MIL	Chad Patrick (9-4)	#161	@ SF	Trevor McDonald (3-7)
Tue, May 5th				@ SF	Logan Webb (8-9)
Wed, May 6th	vs MIL	Brandon Sproat (3-7)		@ SF	Adrian Houser (4-7)
Thu, May 7th	@ SD	Michael King (12-10)	#55	vs STL	Matthew Liberatore (6-14)	#95
Fri, May 8th	@ SD	Griffin Canning (5-9)		vs STL	Michael McGreevy (7-9)	#109
Sat, May 9th	@ SD	Randy Vasquez (10-6)	#245	vs STL	Dustin May (7-9)	#35
Sun, May 10th	@ SD	Walker Buehler (9-6)	#90	vs STL	Kyle Leahy (10-5)	#79
Tue, May 12th	@ ATH	Jeffrey Springs (4-14)	#267	@ MIL	Brandon Sproat (3-7)
Wed, May 13th	@ ATH	J.T. Ginn (9-8)		@ MIL	Jacob Misiorowski (16-5)	#7
Thu, May 14th	@ ATH	Jacob Lopez (7-5)	#251	@ MIL	Kyle Harrison (11-5)	#62
Fri, May 15th	vs KC	Michael Wacha (9-10)	#99	@ SEA	Emerson Hancock (7-8)	#135
Sat, May 16th	vs KC	Noah Cameron (9-8)	#91	@ SEA	Logan Gilbert (12-11)	#8
Sun, May 17th	vs KC	Stephen Kolek (4-3)		@ SEA	George Kirby (9-11)	#33
Mon, May 18th				vs LAD	Yoshinobu Yamamoto (14-9)	#4
Tue, May 19th	vs PIT	Mitch Keller (6-8)		vs LAD	Emmet Sheehan (5-8)	#65
Wed, May 20th	vs PIT	Carmen Mlodzinski (8-7)	#52	vs LAD	Shohei Ohtani (8-2)	#1
Fri, May 22nd				vs ATH	Jeffrey Springs (4-14)	#267
Sat, May 23rd	@ CIN	Chase Petty (1-2)	#268	vs ATH	J.T. Ginn (9-8)
Sun, May 24th				vs ATH	Luis Medina (6-3)	#270
Mon, May 25th	@ MIL	Jacob Misiorowski (16-5)	#7	vs PHI	Jesus Luzardo (14-5)
Tue, May 26th	@ MIL	Kyle Harrison (11-5)	#62	vs PHI	Aaron Nola (7-12)	#68
Wed, May 27th	@ MIL	Chad Patrick (9-4)	#161	vs PHI	Cristopher Sanchez (18-7)	#6
Fri, May 29th	vs CHC	Shota Imanaga (11-10)	#49	@ WSH	Paxton Schultz
Sat, May 30th	vs CHC	Ben Brown (4-2)		@ WSH	Foster Griffin (15-6)	#54
Sun, May 31st	vs CHC	Jordan Wicks (0-2)		@ WSH	Zack Littell (8-8)
Tue, Jun 2nd	vs TEX	Nathan Eovaldi (11-10)	#66	@ PHI	Aaron Nola (7-12)	#68
Wed, Jun 3rd	vs TEX	MacKenzie Gore (8-11)	#39	@ PHI	Cristopher Sanchez (18-7)	#6
Thu, Jun 4th				@ PHI	Zack Wheeler (14-5)	#5
Fri, Jun 5th	vs CIN	Brady Singer (6-15)	#221	vs NYM	Christian Scott (4-5)
Sat, Jun 6th	vs CIN	Nick Lodolo (3-6)	#169	vs NYM	Nolan McLean (12-10)	#28
Sun, Jun 7th	vs CIN	Rhett Lowder (7-12)	#200	vs NYM	Huascar Brazoban (6-2)	#229
Mon, Jun 8th				vs CIN	Andrew Abbott (6-11)	#149
Tue, Jun 9th	@ NYM	Freddy Peralta (10-11)	#51	vs CIN	Chase Burns (15-3)
Wed, Jun 10th	@ NYM	Austin Warren		vs CIN	Brady Singer (6-15)	#221
Fri, Jun 12th	@ MIN	Joe Ryan (7-10)	#25	@ BAL	Shane Baz (6-15)	#85
Sat, Jun 13th	@ MIN	Connor Prielipp (6-7)	#110	@ BAL	Trey Gibson (2-3)	#249
Sun, Jun 14th	@ MIN	Taj Bradley (12-6)	#44	@ BAL	Trevor Rogers (10-11)	#42
Mon, Jun 15th	vs SD	Wandy Peralta (3-3)	#264	@ STL	Dustin May (7-9)	#35
Tue, Jun 16th	vs SD	Michael King (12-10)	#55	@ STL	Andre Pallante (12-9)	#87
Wed, Jun 17th	vs SD	Bradgley Rodriguez (4-3)	#133	@ STL	Kyle Leahy (10-5)	#79
Fri, Jun 19th	@ KC	Seth Lugo (7-9)	#184	@ TEX	Jacob deGrom (11-11)	#12
Sat, Jun 20th				@ TEX	MacKenzie Gore (8-11)	#39
Sun, Jun 21st	@ KC	Stephen Kolek (4-3)		@ TEX	Nathan Eovaldi (11-10)	#66
Mon, Jun 22nd	vs ARI	Merrill Kelly (10-14)	#146	vs ATL	Grant Holmes (10-6)	#193
Tue, Jun 23rd	vs ARI	Eduardo Rodriguez (16-7)	#191	vs ATL	JR Ritchie (1-5)	#103
Wed, Jun 24th	vs ARI	Mitch Bratt (1-3)		vs ATL	Martin Perez (9-9)	#82
Fri, Jun 26th	vs MIA	Max Meyer (9-1)		vs LAD	Roki Sasaki (5-5)	#102
Sat, Jun 27th	vs MIA	Ryan Gusto (1-5)	#142	vs LAD	Yoshinobu Yamamoto (14-9)	#4
Sun, Jun 28th	vs MIA	Tyler Phillips (5-6)	#247	vs LAD	Emmet Sheehan (5-8)	#65
Mon, Jun 29th				@ CHC	Shota Imanaga (11-10)	#49
Tue, Jun 30th	@ ATL	Martin Perez (9-9)	#82	@ CHC	Matthew Boyd (10-5)	#78
Wed, Jul 1st	@ ATL	Reynaldo Lopez (4-5)		@ CHC	Colin Rea (8-8)	#262
Thu, Jul 2nd	@ ATL	Hurston Waldrep (0-1)		@ LAD	Roki Sasaki (5-5)	#102
Fri, Jul 3rd	@ CHC	David Peterson (9-8)	#61	@ LAD	Shohei Ohtani (8-2)	#1
Sat, Jul 4th	@ CHC	Shota Imanaga (11-10)	#49	@ LAD	Yoshinobu Yamamoto (14-9)	#4
Sun, Jul 5th	@ CHC	Javier Assad (6-2)	#243	@ LAD	Emmet Sheehan (5-8)	#65
Mon, Jul 6th	vs MIL	Shane Drohan (7-5)	#128	vs ARI	Brandon Pfaadt (8-3)	#130
Tue, Jul 7th	vs MIL	Robert Gasser (5-5)	#43	vs ARI	Zac Gallen (3-9)	#216
Wed, Jul 8th	vs MIL	Kyle Harrison (11-5)	#62	vs ARI
Thu, Jul 9th	vs MIL	Logan Henderson (11-3)	#11	vs ARI	Merrill Kelly (10-14)	#146
Fri, Jul 10th	vs ATL	Chris Sale (14-9)	#3	vs TOR	Shane Bieber (5-2)
Sat, Jul 11th	vs ATL	Reynaldo Lopez (4-5)		vs TOR	Trey Yesavage (5-6)	#24
Sun, Jul 12th	vs ATL	Danny Young		vs TOR	Kevin Gausman (9-12)	#36
Fri, Jul 17th	@ ARI	Merrill Kelly (10-14)	#146	@ KC	Seth Lugo (7-9)	#184
Sat, Jul 18th	@ ARI	Brandon Pfaadt (8-3)	#130	@ KC	Randy Dobnak (3-5)	#254
Sun, Jul 19th	@ ARI	Eduardo Rodriguez (16-7)	#191	@ KC	Noah Cameron (9-8)	#91
Mon, Jul 20th	@ LAA	Jose Soriano (12-8)	#23	@ ATL	Bryce Elder (8-8)
Tue, Jul 21st	@ LAA	Walbert Urena (9-11)	#40	@ ATL	Reynaldo Lopez (4-5)
Wed, Jul 22nd	@ LAA	Reid Detmers (7-8)	#16	@ ATL	Martin Perez (9-9)	#82
Thu, Jul 23rd	vs ARI	Brandon Pfaadt (8-3)	#130	@ ATL	Chris Sale (14-9)	#3
Fri, Jul 24th	vs CIN	Rhett Lowder (7-12)	#200	@ MIA	Ryan Gusto (1-5)	#142
Sat, Jul 25th	vs CIN	Hunter Greene (2-2)		@ MIA	Eury Perez (8-11)	#22
Sun, Jul 26th	vs CIN	Andrew Abbott (6-11)	#149	@ MIA	Janson Junk (6-9)	#138
Tue, Jul 28th	vs CHC	Colin Rea (8-8)	#262	vs COL	Michael Lorenzen (3-13)
Wed, Jul 29th	vs CHC	Matthew Boyd (10-5)	#78	vs COL	Gabriel Hughes (0-8)
Thu, Jul 30th	vs CHC	Javier Assad (6-2)	#243	vs SF	Robbie Ray (13-8)	#198
Fri, Jul 31st	@ TOR	Dylan Cease (11-6)		vs SF	Carson Whisenhunt (3-4)
Sat, Aug 1st	@ TOR	Kevin Gausman (9-12)	#36	vs SF	Tyler Mahle (7-10)	#71
Sun, Aug 2nd	@ TOR	Max Scherzer (4-9)	#127	vs SF	Landen Roupp (9-14)
Mon, Aug 3rd	@ NYY	Cam Schlittler (14-6)	#9	@ ARI	Brandon Pfaadt (8-3)	#130
Tue, Aug 4th	@ NYY	Ryan Weathers (5-8)		@ ARI	Eduardo Rodriguez (16-7)	#191
Wed, Aug 5th	@ NYY	Will Warren (11-6)	#69	@ ARI	Mitch Bratt (1-3)
Thu, Aug 6th				@ ARI	Kohl Drake (0-1)	#123
Fri, Aug 7th	vs COL	Ryan Feltner (7-10)	#230	vs HOU	Ronel Blanco (0-1)	#207
Sat, Aug 8th	vs COL	Kyle Freeland (4-12)	#187	vs HOU	Peter Lambert (8-10)	#185
Sun, Aug 9th	vs COL	Michael Lorenzen (3-13)		vs HOU	Cristian Javier (2-6)
Mon, Aug 10th	vs PHI	Andrew Painter (3-10)	#125	vs MIL	Logan Henderson (11-3)	#11
Tue, Aug 11th	vs PHI	Cristopher Sanchez (18-7)	#6	vs MIL	Kyle Harrison (11-5)	#62
Wed, Aug 12th	vs PHI	Zack Wheeler (14-5)	#5	vs MIL	Dustin May (7-9)	#35
Fri, Aug 14th	@ CHC	Clay Holmes (6-8)	#83	@ CLE	Gavin Williams (14-8)	#20
Sat, Aug 15th	@ CHC	Matthew Boyd (10-5)	#78	@ CLE	Joey Cantillo (11-9)	#63
Sun, Aug 16th	@ CHC	Edward Cabrera (5-5)	#126	@ CLE	Tanner Bibee (7-15)	#80
Mon, Aug 17th	@ CIN	Rhett Lowder (7-12)	#200	@ NYM	Nolan McLean (12-10)	#28
Tue, Aug 18th	@ CIN	Andrew Abbott (6-11)	#149	@ NYM	Zac Thornton (5-6)	#122
Wed, Aug 19th	@ CIN	Chase Burns (15-3)		@ NYM	Robert Stock (1-3)
Fri, Aug 21st	@ PHI	Jesus Luzardo (14-5)		vs MIN	Connor Prielipp (6-7)	#110
Sat, Aug 22nd	@ PHI	Andrew Painter (3-10)	#125	vs MIN	Dean Kremer (5-5)	#81
Sun, Aug 23rd	@ PHI	Cristopher Sanchez (18-7)	#6	vs MIN	Bailey Ober (7-7)	#155
Mon, Aug 24th				vs PIT	Braxton Ashcraft (14-6)
Tue, Aug 25th	vs BAL	Chris Bassitt (9-5)	#175	vs PIT	Paul Skenes (10-11)	#14
Wed, Aug 26th	vs BAL	Kyle Bradish (7-14)		vs PIT	Bubba Chandler (8-10)	#59
Fri, Aug 28th	vs PIT	Jared Jones (5-6)	#27	@ TB	Shane McClanahan (10-7)
Sat, Aug 29th	vs PIT	Lake Bachar (2-4)	#156	@ TB	Nick Martinez (15-6)	#208
Sun, Aug 30th	vs PIT	Braxton Ashcraft (14-6)		@ TB	Drew Rasmussen (16-5)	#26
Mon, Aug 31st				@ CIN	Brady Singer (6-15)	#221
Tue, Sep 1st	@ LAD	Eric Lauer (8-7)		@ CIN	Nick Lodolo (3-6)	#169
Wed, Sep 2nd	@ LAD	Yoshinobu Yamamoto (14-9)	#4	@ CIN	Brandon Williamson (5-5)	#241
Fri, Sep 4th	@ COL	Ryan Feltner (7-10)	#230	vs NYY	Max Fried (5-5)	#21
Sat, Sep 5th	@ COL	Mason Adams (0-2)	#166	vs NYY	Carlos Rodon (7-3)	#32
Sun, Sep 6th	@ COL	Tanner Gordon (1-6)	#222	vs NYY	Gerrit Cole (10-9)	#18
Mon, Sep 7th	@ SF	Logan Webb (8-9)		vs WSH	Jake Irvin (2-10)	#213
Tue, Sep 8th	@ SF	Landen Roupp (9-14)		vs WSH	Riley Cornelio (3-2)	#197
Wed, Sep 9th	@ SF	Blade Tidwell (1-2)		vs WSH	Jackson Kent (2-4)
Fri, Sep 11th	vs CWS	Anthony Kay (10-9)	#121	@ SF	Anthony Molina (3-2)	#192
Sat, Sep 12th	vs CWS	Sean Newcomb (2-5)	#151	@ SF	Cesar Perdomo (0-1)	#252
Sun, Sep 13th	vs CWS	David Sandlin (3-2)	#94	@ SF	Logan Webb (8-9)
Mon, Sep 14th	vs SF	Landen Roupp (9-14)		@ COL	Tomoyuki Sugano (12-12)	#263
Tue, Sep 15th	vs SF	Blade Tidwell (1-2)		@ COL	Kyle Freeland (4-12)	#187
Wed, Sep 16th	vs SF	Anthony Molina (3-2)	#192	@ COL	Mason Adams (0-2)	#166
Thu, Sep 17th				@ COL	Tanner Gordon (1-6)	#222
Fri, Sep 18th	vs WSH	Cade Cavalli (13-5)	#34	vs MIA	Tyler Phillips (5-6)	#247
Sat, Sep 19th	vs WSH	Andrew Alvarez (2-6)	#88	vs MIA	Eury Perez (8-11)	#22
Sun, Sep 20th	vs WSH	Jake Irvin (2-10)	#213	vs MIA	Sandy Alcantara (13-11)	#77
Tue, Sep 22nd	@ PIT	Jared Jones (5-6)	#27	@ LAD	Brock Stewart
Wed, Sep 23rd	@ PIT	Lake Bachar (2-4)	#156	@ LAD	Yoshinobu Yamamoto (14-9)	#4
Thu, Sep 24th	@ PIT	Paul Skenes (10-11)	#14	@ LAD	Tyler Glasnow (5-2)	#10
Fri, Sep 25th	@ MIL	Robert Gasser (5-5)	#43	vs ARI	Brandon Pfaadt (8-3)	#130
Sat, Sep 26th	@ MIL	Dustin May (7-9)	#35	vs ARI	Taylor Clarke
Sun, Sep 27th	@ MIL	Jacob Misiorowski (16-5)	#7	vs ARI	Michael Soroka (9-5)	#48
Sun, Mar 29th	vs TB	Steven Matz (6-6)	#201
Mon, Apr 13th	vs CLE	Gavin Williams (14-8)	#20
Mon, Apr 20th	@ MIA	Max Meyer (9-1)
Fri, Apr 24th	vs SEA	George Kirby (9-11)	#33
Thu, Apr 30th	@ PIT	Paul Skenes (10-11)	#14
Thu, May 21st	vs PIT	Braxton Ashcraft (14-6)
Mon, Jun 1st	vs TEX	Jacob deGrom (11-11)	#12
Thu, Jun 11th	@ NYM	Christian Scott (4-5)
Thu, Jun 18th	@ KC	Noah Cameron (9-8)	#91
Mon, Jul 27th	vs CHC	David Peterson (9-8)	#61
Thu, Aug 20th	@ CIN	Brady Singer (6-15)	#221
Thu, Aug 27th	vs BAL	Trevor Rogers (10-11)	#42
Thu, Sep 3rd	@ LAD	Tarik Skubal (12-7)	#2