Who Should I Trade?

Blas Castano for Riley O'Brien (2026)

Summary
Stats
Projections
News & Notes
Schedule

Who Should I Trade? Player Summaries
	Experts' Pick
	Riley O'Brien RP - STL	Blas Castano SP,RP - COL
Expert Recommendation	100% Recommended by 6 of 6 experts	0% Recommended by 0 of 6 experts
Rankings

Rest of Season	# 73	‐
VBR	# 298	# 1107

Projections

Strikeouts	21	5
Wins	1	0
Saves	8	0
ERA	3.65	5.21
WHIP	1.39	1.63

Misc

Injury Alert	-	IL15

Expert Ranks

Scott Pianowski Yahoo! Sports	# 57	‐

Dalton Del Don The Deep Shot	# 72	‐

Chris Welsh FantasyPros	# 68	‐

Mike Maher BettingPros	# 76	‐

Kelly Kirby FantasyPros	# 118	‐

Kevin Spinelli KevScores	# 96	‐

Who Should I Trade? Player Statistics
	Riley O'Brien RP - STL	Blas Castano SP,RP - COL
2026 Stats


Games Played	44	10

Games Started	0	0

Innings Pitched	43.2	20.2

Wins	3	1

Losses	4	0

Saves	26	0

Blown Saves	5	0

Holds	1	0

Hits Allowed	34	22

Earned Runs	17	9

Home Runs Allowed	2	4

Strikeouts	46	17

Walks	18	6

ERA	3.50	3.92

WHIP	1.19	1.35

Who Should I Trade? Player Projections
	Riley O'Brien RP - STL	Blas Castano SP,RP - COL
2026 Projections


Games Played	22	10

Games Started	0	0

Innings Pitched	19.8	7.3

Wins	1	0

Losses	1	0

Saves	8	0

Blown Saves	0	0

Holds	2	0

Hits Allowed	17	8

Earned Runs	8	4

Home Runs Allowed	2	1

Strikeouts	21	5

Walks	9	3

ERA	3.65	5.21

WHIP	1.39	1.63

Who Should I Trade? Player Notes
	Riley O'Brien RP - STL	Blas Castano SP,RP - COL
News
	Riley O'Brien struck out three batters while allowing two walks in a scoreless outing to earn the save in Wednesday's 1-0 win over the Angels. Chase Davis Thu, Jul 23rd	Blas Castano began a rehab assignment at Triple-A Albuquerque on Saturday. Ari Koslow Sun, Aug 2nd
	Riley O'Brien allowed one hit and one walk while striking out one in a scoreless appearance to earn the save in a 5-4 win over the Diamondbacks. Chase Davis Sat, Jul 18th	Blas Castano threw a bullpen session on Wednesday. Ari Koslow Fri, Jul 31st
	Riley O'Brien struck out one batter while allowing no hits and one walk in a scoreless outing to earn the save in Saturday's 4-1 win over Atlanta. Chase Davis Sun, Jul 12th	Blas Castano is scheduled to throw another bullpen on Tuesday. Ari Koslow Sat, Jul 25th
	Riley O'Brien struck out two batters in a scoreless outing to earn the save in Friday's 2-1 win over the Braves. Chase Davis Sat, Jul 11th	Rockies right-hander Blas Castano (pectoral) threw his first bullpen session on Wednesday and plans to do so again on July 28. Brenton Kemp Fri, Jul 24th
	Riley O'Brien struck out one batter while allowing one walk over a scoreless frame to earn the save in Saturday's 3-0 win over the Cubs. Chase Davis Sun, Jul 5th	Blas Castano is hopeful to face hitters this week. Nicholas Rodriguez Tue, Jul 21st
Notes
There are no recent notes for these players

Who Should I Trade? Player Schedules
Date	Opp	Opp Pitcher	VBR	Opp	Opp Pitcher	VBR
	Riley O'Brien RP - STL			Blas Castano SP,RP - COL
Fri, Mar 27th				@ MIA	Sandy Alcantara (11-6)	#60
Sat, Mar 28th	vs TB	Joe Boyle (0-1)	#199	@ MIA	Eury Perez (5-8)	#41
Sun, Mar 29th	vs TB	Steven Matz (4-4)	#186	@ MIA	Max Meyer (9-1)	#75
Mon, Mar 30th	vs NYM	Clay Holmes (4-4)	#121	@ TOR	Cody Ponce (0-0)
Tue, Mar 31st	vs NYM	Kodai Senga (0-8)	#198	@ TOR	Max Scherzer (1-4)	#149
Wed, Apr 1st	vs NYM	Freddy Peralta (5-9)	#40	@ TOR	Kevin Gausman (5-10)	#27
Fri, Apr 3rd	@ DET	Framber Valdez (6-7)	#32	vs PHI	Aaron Nola (3-9)	#59
Sat, Apr 4th	@ DET	Jack Flaherty (3-8)	#94	vs PHI	Jesus Luzardo (9-5)	#11
Sun, Apr 5th	@ DET	Keider Montero (7-6)	#145	vs PHI	Taijuan Walker (1-4)
Mon, Apr 6th	@ WSH	Zack Littell (7-8)	#211	vs HOU	Cody Bolton (0-1)	#325
Tue, Apr 7th	@ WSH	Cade Cavalli (8-4)	#54	vs HOU	Mike Burrows (4-9)	#210
Wed, Apr 8th	@ WSH	Miles Mikolas (3-8)	#295	vs HOU	Cristian Javier (1-1)	#175
Thu, Apr 9th				@ SD	Randy Vasquez (6-6)	#252
Fri, Apr 10th	vs BOS	Connelly Early (7-5)	#163	@ SD	Walker Buehler (6-5)	#213
Sat, Apr 11th	vs BOS	Ranger Suarez (4-3)	#22	@ SD	German Marquez (4-2)	#334
Sun, Apr 12th	vs BOS	Brayan Bello (3-6)	#111	@ SD	Nick Pivetta (1-2)	#101
Tue, Apr 14th	vs CLE	Joey Cantillo (8-6)	#88	@ HOU	Colton Gordon (0-0)	#234
Wed, Apr 15th	vs CLE	Slade Cecconi (4-7)	#135	@ HOU	Spencer Arrighetti (7-5)	#282
Thu, Apr 16th				@ HOU	Ryan Weiss (0-3)	#405
Fri, Apr 17th	@ HOU	Peter Lambert (8-5)	#153	vs LAD	Tyler Glasnow (3-0)	#65
Sat, Apr 18th	@ HOU	Lance McCullers Jr. (2-3)	#284	vs LAD	Emmet Sheehan (4-7)	#48
Sun, Apr 19th	@ HOU	Mike Burrows (4-9)	#210	vs LAD	Roki Sasaki (5-5)	#92
Mon, Apr 20th	@ MIA	Max Meyer (9-1)	#75	vs LAD	Justin Wrobleski (11-2)	#80
Tue, Apr 21st	@ MIA	Chris Paddack (0-7)		vs SD	Randy Vasquez (6-6)	#252
Wed, Apr 22nd	@ MIA	Janson Junk (5-6)	#120	vs SD	Walker Buehler (6-5)	#213
Thu, Apr 23rd				vs SD	Matt Waldron (1-2)	#383
Fri, Apr 24th	vs SEA	George Kirby (8-9)	#21	@ NYM	Freddy Peralta (5-9)	#40
Sun, Apr 26th	vs SEA	Emerson Hancock (6-5)	#105	@ NYM	Kodai Senga (0-8)	#198
Tue, Apr 28th	@ PIT	Braxton Ashcraft (11-4)	#31	@ CIN	Chase Burns (12-1)	#29
Wed, Apr 29th	@ PIT	Bubba Chandler (3-8)	#103	@ CIN	Brandon Williamson (2-3)	#350
Thu, Apr 30th	@ PIT	Paul Skenes (9-9)	#4	@ CIN	Andrew Abbott (5-7)	#106
Fri, May 1st	vs LAD	Emmet Sheehan (4-7)	#48	vs ATL	Grant Holmes (6-4)	#144
Sat, May 2nd	vs LAD	Roki Sasaki (5-5)	#92	vs ATL	Chris Sale (12-6)	#8
Sun, May 3rd	vs LAD	Justin Wrobleski (11-2)	#80	vs ATL	Spencer Strider (4-2)	#267
Mon, May 4th	vs MIL	Chad Patrick (6-4)	#117	vs NYM	Huascar Brazoban (5-2)	#184
Wed, May 6th	vs MIL	Brandon Sproat (3-6)	#141	vs NYM	Freddy Peralta (5-9)	#40
Thu, May 7th	@ SD	Michael King (6-7)	#57	vs NYM	Christian Scott (3-3)	#50
Fri, May 8th	@ SD	Griffin Canning (2-9)	#155	@ PHI	Jesus Luzardo (9-5)	#11
Sat, May 9th	@ SD	Randy Vasquez (6-6)	#252	@ PHI	Aaron Nola (3-9)	#59
Sun, May 10th	@ SD	Walker Buehler (6-5)	#213	@ PHI	Cristopher Sanchez (14-4)	#3
Tue, May 12th	@ ATH	Jeffrey Springs (3-11)	#246	@ PIT	Paul Skenes (9-9)	#4
Wed, May 13th	@ ATH	J.T. Ginn (8-6)	#160	@ PIT	Mitch Keller (6-7)	#112
Thu, May 14th	@ ATH	Jacob Lopez (5-4)	#185	@ PIT	Mason Montgomery (4-3)	#100
Fri, May 15th	vs KC	Michael Wacha (5-8)	#73	vs ARI	Merrill Kelly (8-8)	#124
Sat, May 16th	vs KC	Noah Cameron (5-8)	#84	vs ARI	Eduardo Rodriguez (10-3)	#128
Sun, May 17th	vs KC	Stephen Kolek (4-3)	#357	vs ARI	Michael Soroka (8-3)	#67
Mon, May 18th				vs TEX	MacKenzie Gore (6-9)	#35
Tue, May 19th	vs PIT	Mitch Keller (6-7)	#112	vs TEX	Tyler Alexander (1-1)	#173
Wed, May 20th	vs PIT	Carmen Mlodzinski (6-3)	#119	vs TEX	Jack Leiter (3-7)	#123
Thu, May 21st	vs PIT	Braxton Ashcraft (11-4)	#31	@ ARI	Eduardo Rodriguez (10-3)	#128
Fri, May 22nd				@ ARI	Michael Soroka (8-3)	#67
Sat, May 23rd	@ CIN	Chase Petty (1-2)	#391	@ ARI	Zac Gallen (3-9)	#172
Sun, May 24th				@ ARI	Ryne Nelson (3-5)	#207
Mon, May 25th	@ MIL	Jacob Misiorowski (11-4)	#5	@ LAD	Emmet Sheehan (4-7)	#48
Tue, May 26th	@ MIL	Kyle Harrison (8-2)	#43	@ LAD	Eric Lauer (6-5)	#347
Wed, May 27th	@ MIL	Chad Patrick (6-4)	#117	@ LAD	Shohei Ohtani (8-2)	#1
Fri, May 29th	vs CHC	Shota Imanaga (7-9)	#23	vs SF	Logan Webb (6-7)	#18
Sat, May 30th	vs CHC	Ben Brown (4-2)	#93	vs SF	Adrian Houser (2-7)	#239
Sun, May 31st	vs CHC	Jordan Wicks (0-2)	#226	vs SF	Robbie Ray (10-6)	#96
Mon, Jun 1st	vs TEX	Jacob deGrom (7-7)	#7	@ LAA	Jose Soriano (9-6)	#52
Tue, Jun 2nd	vs TEX	Nathan Eovaldi (10-9)	#15	@ LAA	Grayson Rodriguez (3-3)	#126
Wed, Jun 3rd	vs TEX	MacKenzie Gore (6-9)	#35	@ LAA	Walbert Urena (6-7)	#294
Fri, Jun 5th	vs CIN	Brady Singer (5-10)	#151	vs MIL	Brandon Sproat (3-6)	#141
Sat, Jun 6th	vs CIN	Nick Lodolo (3-2)	#114	vs MIL	Jacob Misiorowski (11-4)	#5
Sun, Jun 7th	vs CIN	Rhett Lowder (3-7)	#277	vs MIL	Shane Drohan (6-4)	#72
Tue, Jun 9th	@ NYM	Freddy Peralta (5-9)	#40	vs CHC	Colin Rea (8-7)	#176
Wed, Jun 10th	@ NYM	Austin Warren		vs CHC	Shota Imanaga (7-9)	#23
Thu, Jun 11th	@ NYM	Christian Scott (3-3)	#50	vs CHC	Edward Cabrera (5-4)	#76
Fri, Jun 12th	@ MIN	Joe Ryan (6-7)	#19	@ ATH	Gage Jump (4-6)	#87
Sat, Jun 13th	@ MIN	Connor Prielipp (3-5)	#99	@ ATH	Joey Estes (0-0)	#398
Sun, Jun 14th	@ MIN	Taj Bradley (9-4)	#51	@ ATH	Jeffrey Springs (3-11)	#246
Mon, Jun 15th	vs SD	Wandy Peralta (2-2)	#244	@ CHC	Shota Imanaga (7-9)	#23
Tue, Jun 16th	vs SD	Michael King (6-7)	#57	@ CHC	Edward Cabrera (5-4)	#76
Wed, Jun 17th	vs SD	Bradgley Rodriguez (2-2)	#165	@ CHC	Javier Assad (6-1)	#161
Fri, Jun 19th	@ KC	Seth Lugo (4-6)	#129	vs PIT	Bubba Chandler (3-8)	#103
Sat, Jun 20th				vs PIT	Paul Skenes (9-9)	#4
Sun, Jun 21st	@ KC	Stephen Kolek (4-3)	#357	vs PIT	Jared Jones (2-2)	#47
Mon, Jun 22nd	vs ARI	Merrill Kelly (8-8)	#124	vs BOS	Jake Bennett (6-4)	#83
Tue, Jun 23rd	vs ARI	Eduardo Rodriguez (10-3)	#128	vs BOS	Sonny Gray (13-2)	#28
Wed, Jun 24th	vs ARI	Mitch Bratt (0-1)	#204	vs BOS	Ranger Suarez (4-3)	#22
Fri, Jun 26th	vs MIA	Max Meyer (9-1)	#75	@ MIN	Taj Bradley (9-4)	#51
Sat, Jun 27th	vs MIA	Ryan Gusto (0-2)	#236	@ MIN	Mike Paredes (0-3)	#403
Sun, Jun 28th	vs MIA	Tyler Phillips (3-5)	#283	@ MIN	Connor Prielipp (3-5)	#99
Mon, Jun 29th				vs MIA	Sandy Alcantara (11-6)	#60
Tue, Jun 30th	@ ATL	Martin Perez (7-6)	#216	vs MIA	Eury Perez (5-8)	#41
Wed, Jul 1st	@ ATL	Reynaldo Lopez (4-3)	#82	vs MIA	Max Meyer (9-1)	#75
Thu, Jul 2nd	@ ATL	Hurston Waldrep (0-1)	#322	vs MIA	Ryan Gusto (0-2)	#236
Fri, Jul 3rd	@ CHC	David Peterson (6-7)	#89	vs SF	Logan Webb (6-7)	#18
Sat, Jul 4th	@ CHC	Shota Imanaga (7-9)	#23	vs SF	Robbie Ray (10-6)	#96
Sun, Jul 5th	@ CHC	Javier Assad (6-1)	#161	vs SF	Tyler Mahle (3-9)	#78
Mon, Jul 6th	vs MIL	Shane Drohan (6-4)	#72	@ LAD	Eric Lauer (6-5)	#347
Tue, Jul 7th	vs MIL	Robert Gasser (3-4)	#115	@ LAD	Justin Wrobleski (11-2)	#80
Wed, Jul 8th	vs MIL	Kyle Harrison (8-2)	#43	@ LAD	Roki Sasaki (5-5)	#92
Thu, Jul 9th	vs MIL	Logan Henderson (5-1)	#36	@ SF	Carson Whisenhunt (2-2)	#179
Fri, Jul 10th	vs ATL	Chris Sale (12-6)	#8	@ SF	Robbie Ray (10-6)	#96
Sat, Jul 11th	vs ATL	Reynaldo Lopez (4-3)	#82	@ SF	Tyler Mahle (3-9)	#78
Sun, Jul 12th	vs ATL	Danny Young		@ SF	Trevor McDonald (3-7)
Fri, Jul 17th	@ ARI	Merrill Kelly (8-8)	#124	vs CIN	Brady Singer (5-10)	#151
Sat, Jul 18th	@ ARI	Brandon Pfaadt (5-1)	#77	vs CIN	Rhett Lowder (3-7)	#277
Sun, Jul 19th	@ ARI	Eduardo Rodriguez (10-3)	#128	vs CIN	Hunter Greene (2-2)	#26
Mon, Jul 20th	@ LAA	Jose Soriano (9-6)	#52	vs WSH	Andrew Alvarez (2-3)	#197
Tue, Jul 21st	@ LAA	Walbert Urena (6-7)	#294	vs WSH	Carson Palmquist (0-1)	#306
Wed, Jul 22nd	@ LAA	Reid Detmers (3-7)	#33	vs WSH	Cade Cavalli (8-4)	#54
Fri, Jul 24th	vs CIN	Rhett Lowder (3-7)	#277	@ MIL	Shane Drohan (6-4)	#72
Sat, Jul 25th	vs CIN	Hunter Greene (2-2)	#26	@ MIL	Robert Gasser (3-4)	#115
Sun, Jul 26th	vs CIN	Andrew Abbott (5-7)	#106	@ MIL	Jacob Misiorowski (11-4)	#5
Tue, Jul 28th	vs CHC	Colin Rea (8-7)	#176	@ SD	Michael King (6-7)	#57
Wed, Jul 29th	vs CHC	Matthew Boyd (6-1)	#37	@ SD	Kyle Hart (0-2)	#219
Fri, Jul 31st	@ TOR	Dylan Cease (7-5)	#9	vs KC	Michael Wacha (5-8)	#73
Sat, Aug 1st	@ TOR	Kevin Gausman (5-10)	#27	vs KC	Luinder Avila (5-4)	#280
Sun, Aug 2nd	@ TOR	Max Scherzer (1-4)	#149	vs KC	Seth Lugo (4-6)	#129
Mon, Aug 3rd	@ NYY	Cam Schlittler (10-6)	#14	vs TB	Ian Seymour (7-3)	#85
Tue, Aug 4th	@ NYY	Ryan Weathers (4-7)	#71	vs TB	Shane McClanahan (9-6)	#49
Wed, Aug 5th	@ NYY	Will Warren (8-5)	#69	vs TB	Nick Martinez (10-3)	#97
Fri, Aug 7th	vs COL	Ryan Feltner (4-5)	#435	@ STL	Kyle Leahy (7-4)	#125
Sat, Aug 8th	vs COL	Kyle Freeland (2-10)	#394	@ STL	Michael McGreevy (4-9)	#95
Sun, Aug 9th	vs COL	Michael Lorenzen (3-9)	#436	@ STL	Matthew Liberatore (5-8)	#118
Mon, Aug 10th	vs PHI	Andrew Painter (1-8)	#206	@ ARI	Michael Soroka (8-3)	#67
Tue, Aug 11th	vs PHI	Cristopher Sanchez (14-4)	#3	@ ARI	Mitch Bratt (0-1)	#204
Wed, Aug 12th	vs PHI			@ ARI
Fri, Aug 14th	@ CHC			@ SF
Sat, Aug 15th	@ CHC			@ SF
Sun, Aug 16th	@ CHC			@ SF
Mon, Aug 17th	@ CIN			vs LAD
Tue, Aug 18th	@ CIN			vs LAD
Wed, Aug 19th	@ CIN			vs LAD
Fri, Aug 21st	@ PHI			vs CLE
Sat, Aug 22nd	@ PHI			vs CLE
Sun, Aug 23rd	@ PHI			vs CLE
Mon, Aug 24th				@ WSH
Tue, Aug 25th	vs BAL			@ WSH
Wed, Aug 26th	vs BAL			@ WSH
Thu, Aug 27th	vs BAL			@ WSH
Fri, Aug 28th	vs PIT			@ ATL
Sat, Aug 29th	vs PIT			@ ATL
Sun, Aug 30th	vs PIT			@ ATL
Mon, Aug 31st				vs BAL
Tue, Sep 1st	@ LAD			vs BAL
Wed, Sep 2nd	@ LAD			vs BAL
Fri, Sep 4th	@ COL			vs STL
Sat, Sep 5th	@ COL			vs STL
Sun, Sep 6th	@ COL			vs STL
Tue, Sep 8th	@ SF			@ NYY
Wed, Sep 9th	@ SF			@ NYY
Thu, Sep 10th				@ NYY
Fri, Sep 11th	vs CWS			@ DET
Sat, Sep 12th	vs CWS			@ DET
Sun, Sep 13th	vs CWS			@ DET
Mon, Sep 14th	vs SF			vs SD
Tue, Sep 15th	vs SF			vs SD
Wed, Sep 16th	vs SF			vs SD
Thu, Sep 17th				vs SD
Fri, Sep 18th	vs WSH			vs SEA
Sat, Sep 19th	vs WSH			vs SEA
Sun, Sep 20th	vs WSH			vs SEA
Tue, Sep 22nd	@ PIT			vs ARI
Wed, Sep 23rd	@ PIT			vs ARI
Thu, Sep 24th	@ PIT			vs ARI
Fri, Sep 25th	@ MIL			@ CWS
Sat, Sep 26th	@ MIL			@ CWS
Sun, Sep 27th	@ MIL			@ CWS
Thu, Mar 26th	vs TB	Drew Rasmussen (10-5)	#20
Mon, Apr 13th	vs CLE	Gavin Williams (10-6)	#24
Sat, Apr 25th	vs SEA	Bryan Woo (7-8)	#13
Mon, Apr 27th	@ PIT	Mason Montgomery (4-3)	#100
Thu, Jun 18th	@ KC	Noah Cameron (5-8)	#84
Thu, Jul 23rd	vs ARI	Brandon Pfaadt (5-1)	#77
Mon, Jul 27th	vs CHC	David Peterson (6-7)	#89
Thu, Jul 30th	vs CHC	Javier Assad (6-1)	#161
Thu, Aug 20th	@ CIN
Thu, Sep 3rd	@ LAD
Mon, Sep 7th	@ SF

Who Should I Trade?

Blas Castano for Riley O'Brien (2026)

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