Blake Walston or Riley O'Brien

Baseball Stats Comparison

Stats
Projections
News & Notes
Schedule

Blake Walston or Riley O'Brien Player Statistics
	Riley O'Brien RP - STL	Blake Walston RP - ARI
2026 Stats


Games Played	56	‐

Games Started	0	‐

Innings Pitched	54.2	‐

Wins	3	‐

Losses	6	‐

Saves	34	‐

Blown Saves	5	‐

Holds	1	‐

Hits Allowed	44	‐

Earned Runs	24	‐

Home Runs Allowed	3	‐

Strikeouts	54	‐

Walks	23	‐

ERA	3.95	‐

WHIP	1.23	‐

Blake Walston or Riley O'Brien Player Projections
	Riley O'Brien RP - STL	Blake Walston RP - ARI
2026 Projections


Games Played	59	7

Games Started	0	2

Innings Pitched	60.2	15.5

Wins	3	1

Losses	3	1

Saves	14	0

Blown Saves	1	0

Holds	11	0

Hits Allowed	52	15

Earned Runs	26	14

Home Runs Allowed	5	3

Strikeouts	63	16

Walks	27	8

ERA	3.92	8.25

WHIP	1.31	1.48

Blake Walston or Riley O'Brien Player Notes
	Riley O'Brien RP - STL	Blake Walston RP - ARI
News
	Riley O'Brien struck out one batter while allowing one hit in a scoreless appearance to earn the save in Thursday's 7-5 win over the Orioles. Chase Davis Fri, Aug 28th	Blake Walston is scheduled to pitch for Triple-A Reno on Tuesday. Ari Koslow Tue, Aug 11th
	Riley O'Brien recorded one out while allowing a hit and two walks to record his 33rd save of the season in Thursday's win against the Reds. Chase Davis Fri, Aug 21st	Blake Walston will make a rehab appearance on Saturday for Triple-A Reno. Ari Koslow Fri, Aug 7th
	Riley O'Brien struck out one batter in a scoreless outing to earn the save in Tuesday's 3-0 win over the Reds. Chase Davis Wed, Aug 19th	The Diamondbacks placed LHP Blake Walston on the 60-day injured list following UCL surgery. Ari Koslow Wed, Mar 25th
	Riley O'Brien picked up the save in a clean ninth inning, striking out three batters on 14 pitches. Chase Davis Tue, Aug 18th
	Riley O'Brien struck out one batter in a scoreless appearance to earn the save in Tuesday's 2-0 win over the Phillies. Chase Davis Wed, Aug 12th
Notes
There are no recent notes for these players

Blake Walston or Riley O'Brien Player Schedules
Date	Opp	Opp Pitcher	VBR	Opp	Opp Pitcher	VBR
	Riley O'Brien RP - STL			Blake Walston RP - ARI
Thu, Mar 26th	vs TB	Drew Rasmussen (14-5)	#13	@ LAD	Yoshinobu Yamamoto (12-8)	#10
Fri, Mar 27th				@ LAD	Emmet Sheehan (4-8)	#110
Sat, Mar 28th	vs TB	Joe Boyle (0-1)	#220	@ LAD	Tyler Glasnow (3-0)	#16
Mon, Mar 30th	vs NYM	Clay Holmes (5-6)	#58	vs DET	Justin Verlander (0-1)	#196
Tue, Mar 31st	vs NYM	Kodai Senga (0-9)	#91	vs DET	Casey Mize (5-8)	#38
Wed, Apr 1st	vs NYM	Freddy Peralta (6-11)	#41	vs DET	Tarik Skubal (8-7)	#2
Thu, Apr 2nd				vs ATL	Reynaldo Lopez (4-3)	#109
Fri, Apr 3rd	@ DET	Framber Valdez (8-9)	#44	vs ATL	Grant Holmes (9-5)	#205
Sat, Apr 4th	@ DET	Jack Flaherty (3-8)	#108	vs ATL	Bryce Elder (8-7)	#194
Sun, Apr 5th	@ DET	Keider Montero (9-8)	#171	vs ATL	Martin Perez (8-8)	#228
Tue, Apr 7th	@ WSH	Cade Cavalli (12-5)	#61	@ NYM	Freddy Peralta (6-11)	#41
Wed, Apr 8th	@ WSH	Miles Mikolas (3-9)		@ NYM	David Peterson (7-7)	#80
Thu, Apr 9th				@ NYM	Nolan McLean (9-8)	#34
Fri, Apr 10th	vs BOS	Connelly Early (7-5)	#224	@ PHI	Jesus Luzardo (12-5)	#9
Sat, Apr 11th	vs BOS	Ranger Suarez (5-3)	#25	@ PHI	Taijuan Walker (1-4)
Sun, Apr 12th	vs BOS	Brayan Bello (5-6)	#150	@ PHI	Zach Pop
Mon, Apr 13th	vs CLE	Gavin Williams (12-7)	#19	@ BAL	Dean Kremer (2-5)	#75
Tue, Apr 14th	vs CLE	Joey Cantillo (9-7)	#59	@ BAL	Trevor Rogers (9-9)	#55
Wed, Apr 15th	vs CLE	Slade Cecconi (4-7)	#143	@ BAL	Kyle Bradish (7-12)	#50
Fri, Apr 17th	@ HOU	Peter Lambert (8-7)	#172	vs TOR	Braydon Fisher (3-4)	#141
Sat, Apr 18th	@ HOU	Lance McCullers Jr. (2-3)		vs TOR	Max Scherzer (1-7)	#164
Sun, Apr 19th	@ HOU	Mike Burrows (4-9)	#193	vs TOR	Kevin Gausman (7-11)	#27
Tue, Apr 21st	@ MIA	Chris Paddack (0-7)		vs CWS	Sean Burke (7-6)	#84
Wed, Apr 22nd	@ MIA	Janson Junk (6-8)	#124	vs CWS	Anthony Kay (9-6)	#185
Thu, Apr 23rd				vs CWS	Davis Martin (9-6)	#144
Sat, Apr 25th	vs SEA	Bryan Woo (9-9)	#15	vs SD	German Marquez (4-2)	#426
Sun, Apr 26th	vs SEA	Emerson Hancock (7-8)	#64	vs SD	Michael King (8-9)	#51
Tue, Apr 28th	@ PIT	Braxton Ashcraft (13-5)	#29	@ MIL	Chad Patrick (7-4)	#116
Wed, Apr 29th	@ PIT	Bubba Chandler (6-9)	#122	@ MIL	Brandon Sproat (3-7)	#175
Thu, Apr 30th	@ PIT	Paul Skenes (9-11)	#5	@ MIL	Brandon Woodruff (2-2)
Fri, May 1st	vs LAD	Emmet Sheehan (4-8)	#110	@ CHC	Colin Rea (8-8)	#167
Sat, May 2nd	vs LAD	Roki Sasaki (5-5)	#131	@ CHC	Shota Imanaga (8-9)	#30
Sun, May 3rd	vs LAD	Justin Wrobleski (11-5)	#133	@ CHC	Matthew Boyd (8-3)	#45
Tue, May 5th				vs PIT	Bubba Chandler (6-9)	#122
Wed, May 6th	vs MIL	Brandon Sproat (3-7)	#175	vs PIT	Paul Skenes (9-11)	#5
Thu, May 7th	@ SD	Michael King (8-9)	#51	vs PIT	Mitch Keller (6-8)
Fri, May 8th	@ SD	Griffin Canning (4-9)	#169	vs NYM	Nolan McLean (9-8)	#34
Sat, May 9th	@ SD	Randy Vasquez (10-6)	#232	vs NYM	Clay Holmes (5-6)	#58
Sun, May 10th	@ SD	Walker Buehler (8-6)	#197	vs NYM	Huascar Brazoban (5-2)	#263
Mon, May 11th				@ TEX	Jakob Junis
Tue, May 12th	@ ATH	Jeffrey Springs (3-12)	#277	@ TEX	MacKenzie Gore (7-10)	#35
Wed, May 13th	@ ATH	J.T. Ginn (9-8)	#204	@ TEX	Kumar Rocker (5-10)	#118
Fri, May 15th	vs KC	Michael Wacha (8-8)	#78	@ COL	Kyle Freeland (4-10)	#414
Sat, May 16th	vs KC	Noah Cameron (9-8)	#67	@ COL	Tomoyuki Sugano (12-8)	#435
Sun, May 17th	vs KC	Stephen Kolek (4-3)		@ COL	Michael Lorenzen (3-11)	#292
Mon, May 18th				vs SF	Robbie Ray (11-7)	#87
Tue, May 19th	vs PIT	Mitch Keller (6-8)		vs SF	Landen Roupp (8-13)	#74
Wed, May 20th	vs PIT	Carmen Mlodzinski (6-6)	#123	vs SF	Tyler Mahle (5-10)	#70
Thu, May 21st	vs PIT	Braxton Ashcraft (13-5)	#29	vs COL	Zach Agnos
Fri, May 22nd				vs COL	Tomoyuki Sugano (12-8)	#435
Sat, May 23rd	@ CIN	Chase Petty (1-2)	#383	vs COL	Michael Lorenzen (3-11)	#292
Sun, May 24th				vs COL	Jose Quintana (2-3)	#433
Mon, May 25th	@ MIL	Jacob Misiorowski (14-5)	#6	@ SF	Landen Roupp (8-13)	#74
Tue, May 26th	@ MIL	Kyle Harrison (10-3)	#57	@ SF	Tyler Mahle (5-10)	#70
Wed, May 27th	@ MIL	Chad Patrick (7-4)	#116	@ SF	Trevor McDonald (3-7)
Fri, May 29th	vs CHC	Shota Imanaga (8-9)	#30	@ SEA	George Kirby (9-10)	#23
Sat, May 30th	vs CHC	Ben Brown (4-2)	#219	@ SEA	Bryan Woo (9-9)	#15
Sun, May 31st	vs CHC	Jordan Wicks (0-2)	#306	@ SEA	Bryce Miller (4-8)	#42
Mon, Jun 1st	vs TEX	Jacob deGrom (9-9)	#7	vs LAD	Emmet Sheehan (4-8)	#110
Tue, Jun 2nd	vs TEX	Nathan Eovaldi (10-9)	#94	vs LAD	Eric Lauer (8-6)	#230
Wed, Jun 3rd	vs TEX	MacKenzie Gore (7-10)	#35	vs LAD	Shohei Ohtani (8-2)	#1
Thu, Jun 4th				vs LAD	Justin Wrobleski (11-5)	#133
Fri, Jun 5th	vs CIN	Brady Singer (5-12)	#135	vs WSH	Foster Griffin (15-4)	#37
Sat, Jun 6th	vs CIN	Nick Lodolo (3-3)	#126	vs WSH	Zack Littell (8-8)	#330
Sun, Jun 7th	vs CIN	Rhett Lowder (6-8)	#234	vs WSH	Cade Cavalli (12-5)	#61
Tue, Jun 9th	@ NYM	Freddy Peralta (6-11)	#41	@ MIA	Max Meyer (9-1)
Wed, Jun 10th	@ NYM	Austin Warren		@ MIA	Ryan Gusto (1-3)	#168
Thu, Jun 11th	@ NYM	Christian Scott (4-4)	#56	@ MIA	Tyler Phillips (3-6)	#229
Fri, Jun 12th	@ MIN	Joe Ryan (6-8)	#69	@ CIN	Nick Lodolo (3-3)	#126
Sat, Jun 13th	@ MIN	Connor Prielipp (3-7)	#90	@ CIN	Rhett Lowder (6-8)	#234
Sun, Jun 14th	@ MIN	Taj Bradley (9-6)	#40	@ CIN	Andrew Abbott (6-9)	#99
Mon, Jun 15th	vs SD	Wandy Peralta (2-2)	#188	vs LAA	Walbert Urena (8-9)	#238
Tue, Jun 16th	vs SD	Michael King (8-9)	#51	vs LAA	Reid Detmers (4-8)	#43
Wed, Jun 17th	vs SD	Bradgley Rodriguez (3-2)	#107	vs LAA	Sam Aldegheri (3-4)	#430
Fri, Jun 19th	@ KC	Seth Lugo (6-7)	#102	vs MIN	Connor Prielipp (3-7)	#90
Sat, Jun 20th				vs MIN	Taj Bradley (9-6)	#40
Sun, Jun 21st	@ KC	Stephen Kolek (4-3)		vs MIN	Mike Paredes (0-3)	#386
Mon, Jun 22nd	vs ARI	Merrill Kelly (8-12)	#120	@ STL	Andre Pallante (12-6)	#293
Tue, Jun 23rd	vs ARI	Eduardo Rodriguez (14-4)	#88	@ STL	Kyle Leahy (10-4)	#100
Wed, Jun 24th	vs ARI	Mitch Bratt (1-2)	#313	@ STL	Matthew Liberatore (5-12)	#81
Fri, Jun 26th	vs MIA	Max Meyer (9-1)		@ TB	Nick Martinez (13-4)	#73
Sat, Jun 27th	vs MIA	Ryan Gusto (1-3)	#168	@ TB	Cole Sulser
Sun, Jun 28th	vs MIA	Tyler Phillips (3-6)	#229	@ TB	Drew Rasmussen (14-5)	#13
Mon, Jun 29th				vs SF	Tyler Mahle (5-10)	#70
Tue, Jun 30th	@ ATL	Martin Perez (8-8)	#228	vs SF	Landen Roupp (8-13)	#74
Wed, Jul 1st	@ ATL	Reynaldo Lopez (4-3)	#109	vs SF	Trevor McDonald (3-7)
Fri, Jul 3rd	@ CHC	David Peterson (7-7)	#80	vs MIL	Kyle Harrison (10-3)	#57
Sat, Jul 4th	@ CHC	Shota Imanaga (8-9)	#30	vs MIL	Brandon Woodruff (2-2)
Sun, Jul 5th	@ CHC	Javier Assad (6-1)	#178	vs MIL	Brandon Sproat (3-7)	#175
Mon, Jul 6th	vs MIL	Shane Drohan (6-5)	#136	@ SD	Walker Buehler (8-6)	#197
Tue, Jul 7th	vs MIL	Robert Gasser (4-5)	#105	@ SD	German Marquez (4-2)	#426
Wed, Jul 8th	vs MIL	Kyle Harrison (10-3)	#57	@ SD	Michael King (8-9)	#51
Thu, Jul 9th	vs MIL	Logan Henderson (9-2)	#32	@ SD	Griffin Canning (4-9)	#169
Fri, Jul 10th	vs ATL	Chris Sale (13-9)	#4	@ LAD	Kyle Hurt
Sat, Jul 11th	vs ATL	Reynaldo Lopez (4-3)	#109	@ LAD	Yoshinobu Yamamoto (12-8)	#10
Sun, Jul 12th	vs ATL	Danny Young		@ LAD	Emmet Sheehan (4-8)	#110
Fri, Jul 17th	@ ARI	Merrill Kelly (8-12)	#120	vs STL	Michael McGreevy (5-9)	#86
Sat, Jul 18th	@ ARI	Brandon Pfaadt (7-1)	#83	vs STL	Dustin May (6-8)	#46
Sun, Jul 19th	@ ARI	Eduardo Rodriguez (14-4)	#88	vs STL	Andre Pallante (12-6)	#293
Mon, Jul 20th	@ LAA	Jose Soriano (10-7)	#36	vs ATH	Jeffrey Springs (3-12)	#277
Tue, Jul 21st	@ LAA	Walbert Urena (8-9)	#238	vs ATH	Jack Perkins (3-9)	#146
Wed, Jul 22nd	@ LAA	Reid Detmers (4-8)	#43	vs ATH	Gage Jump (6-8)	#79
Thu, Jul 23rd	vs ARI	Brandon Pfaadt (7-1)	#83	@ STL	Michael McGreevy (5-9)	#86
Fri, Jul 24th	vs CIN	Rhett Lowder (6-8)	#234	@ WSH	Carson Palmquist (0-2)	#355
Sat, Jul 25th	vs CIN	Hunter Greene (2-2)		@ WSH	Foster Griffin (15-4)	#37
Sun, Jul 26th	vs CIN	Andrew Abbott (6-9)	#99	@ WSH	Miles Mikolas (3-9)
Mon, Jul 27th	vs CHC	David Peterson (7-7)	#80	@ PIT	Mitch Keller (6-8)
Tue, Jul 28th	vs CHC	Colin Rea (8-8)	#167	@ PIT	Bubba Chandler (6-9)	#122
Wed, Jul 29th	vs CHC	Matthew Boyd (8-3)	#45	@ PIT	Jared Jones (2-6)	#63
Fri, Jul 31st	@ TOR	Dylan Cease (9-5)	#8	@ CLE	Tanner Bibee (5-14)	#52
Sat, Aug 1st	@ TOR	Kevin Gausman (7-11)	#27	@ CLE	Parker Messick (10-8)	#31
Sun, Aug 2nd	@ TOR	Max Scherzer (1-7)	#164	@ CLE	Gavin Williams (12-7)	#19
Mon, Aug 3rd	@ NYY	Cam Schlittler (12-6)	#14	vs SD	Michael King (8-9)	#51
Tue, Aug 4th	@ NYY	Ryan Weathers (5-8)	#226	vs SD	Randy Vasquez (10-6)	#232
Wed, Aug 5th	@ NYY	Will Warren (8-6)	#60	vs SD	Casey Mize (5-8)	#38
Thu, Aug 6th				vs SD	Walker Buehler (8-6)	#197
Fri, Aug 7th	vs COL	Ryan Feltner (5-8)	#434	vs LAD	Roki Sasaki (5-5)	#131
Sat, Aug 8th	vs COL	Kyle Freeland (4-10)	#414	vs LAD	Yoshinobu Yamamoto (12-8)	#10
Sun, Aug 9th	vs COL	Michael Lorenzen (3-11)	#292	vs LAD	Justin Wrobleski (11-5)	#133
Mon, Aug 10th	vs PHI	Andrew Painter (3-8)	#206	vs COL	Gabriel Hughes (0-6)	#393
Tue, Aug 11th	vs PHI	Cristopher Sanchez (16-4)	#3	vs COL	Tomoyuki Sugano (12-8)	#435
Wed, Aug 12th	vs PHI	Zack Wheeler (10-5)	#11	vs COL	Ryan Feltner (5-8)	#434
Fri, Aug 14th	@ CHC	Clay Holmes (5-6)	#58	@ ATL	Chris Sale (13-9)	#4
Sat, Aug 15th	@ CHC	Matthew Boyd (8-3)	#45	@ ATL	Grant Holmes (9-5)	#205
Sun, Aug 16th	@ CHC	Edward Cabrera (5-5)	#138	@ ATL	Bryce Elder (8-7)	#194
Mon, Aug 17th	@ CIN	Rhett Lowder (6-8)	#234	@ BOS	Alec Gamboa
Tue, Aug 18th	@ CIN	Andrew Abbott (6-9)	#99	@ BOS	Ranger Suarez (5-3)	#25
Wed, Aug 19th	@ CIN	Chase Burns (14-3)	#22	@ BOS	Payton Tolle (8-6)	#26
Fri, Aug 21st	@ PHI	Jesus Luzardo (12-5)	#9	vs CIN	Nick Lodolo (3-3)	#126
Sat, Aug 22nd	@ PHI	Andrew Painter (3-8)	#206	vs CIN	Rhett Lowder (6-8)	#234
Sun, Aug 23rd	@ PHI	Cristopher Sanchez (16-4)	#3	vs CIN	Andrew Abbott (6-9)	#99
Mon, Aug 24th				vs CHC	Kevin Gausman (7-11)	#27
Tue, Aug 25th	vs BAL	Chris Bassitt (5-4)	#128	vs CHC	Clay Holmes (5-6)	#58
Wed, Aug 26th	vs BAL	Kyle Bradish (7-12)	#50	vs CHC	Matthew Boyd (8-3)	#45
Thu, Aug 27th	vs BAL	Trevor Rogers (9-9)	#55	@ SF	Landen Roupp (8-13)	#74
Fri, Aug 28th	vs PIT	Jared Jones (2-6)	#63	@ SF	Blade Tidwell (0-1)	#179
Sat, Aug 29th	vs PIT	Lake Bachar (1-3)	#264	@ SF
Mon, Aug 31st				vs PHI	Aaron Nola (5-10)	#47
Tue, Sep 1st	@ LAD	Shohei Ohtani (8-2)	#1	vs PHI	Jesus Luzardo (12-5)	#9
Wed, Sep 2nd	@ LAD			vs PHI	Andrew Painter (3-8)	#206
Fri, Sep 4th	@ COL	Ryan Feltner (5-8)	#434	@ HOU	Ethan Pecko (0-0)	#181
Sat, Sep 5th	@ COL	Mason Adams (0-0)	#273	@ HOU	Peter Lambert (8-7)	#172
Sun, Sep 6th	@ COL	Tanner Gordon (1-4)	#417	@ HOU	Hayden Wesneski (4-1)	#72
Mon, Sep 7th	@ SF	Blade Tidwell (0-1)	#179	@ KC	Noah Cameron (9-8)	#67
Tue, Sep 8th	@ SF			@ KC
Wed, Sep 9th	@ SF			@ KC
Fri, Sep 11th	vs CWS			vs TEX
Sat, Sep 12th	vs CWS			vs TEX
Sun, Sep 13th	vs CWS			vs TEX
Mon, Sep 14th	vs SF			vs MIA
Tue, Sep 15th	vs SF			vs MIA
Wed, Sep 16th	vs SF			vs MIA
Fri, Sep 18th	vs WSH			vs NYY
Sat, Sep 19th	vs WSH			vs NYY
Sun, Sep 20th	vs WSH			vs NYY
Tue, Sep 22nd	@ PIT			@ COL
Wed, Sep 23rd	@ PIT			@ COL
Thu, Sep 24th	@ PIT			@ COL
Fri, Sep 25th	@ MIL			@ SD
Sat, Sep 26th	@ MIL			@ SD
Sun, Sep 27th	@ MIL			@ SD
Sun, Mar 29th	vs TB	Steven Matz (5-4)	#218
Mon, Apr 6th	@ WSH	Zack Littell (8-8)	#330
Mon, Apr 20th	@ MIA	Max Meyer (9-1)
Fri, Apr 24th	vs SEA	George Kirby (9-10)	#23
Mon, Apr 27th	@ PIT	Mason Montgomery (5-3)	#76
Mon, May 4th	vs MIL	Chad Patrick (7-4)	#116
Thu, May 14th	@ ATH	Jacob Lopez (5-4)	#173
Thu, Jun 18th	@ KC	Noah Cameron (9-8)	#67
Thu, Jul 2nd	@ ATL	Hurston Waldrep (0-1)
Thu, Jul 30th	vs CHC	Javier Assad (6-1)	#178
Thu, Aug 20th	@ CIN	Brady Singer (5-12)	#135
Sun, Aug 30th	vs PIT	Braxton Ashcraft (13-5)	#29
Thu, Sep 3rd	@ LAD	Yoshinobu Yamamoto (12-8)	#10