Who Should I Trade?

John Klein for Welinton Herrera (2026)

Summary
Stats
Projections
News & Notes
Schedule

Who Should I Trade? Player Summaries
	Experts' Pick	Experts' Pick
	John Klein SP,RP - MIN	Welinton Herrera RP - COL
Expert Recommendation	0% Recommended by 0 of 0 experts	0% Recommended by 0 of 0 experts
Rankings

Rest of Season	‐	‐
VBR	# 772	‐

Projections

Strikeouts	10	1
Wins	1	0
Saves	0	0
ERA	4.55	7.03
WHIP	1.47	1.56

Misc

Injury Alert	MiLB	IL60

Expert Ranks

Who Should I Trade? Player Statistics
	John Klein SP,RP - MIN	Welinton Herrera RP - COL
2026 Stats


Games Played	3	3

Games Started	0	0

Innings Pitched	4.1	2.1

Wins	0	0

Losses	1	0

Saves	0	0

Blown Saves	0	0

Holds	0	0

Hits Allowed	3	2

Earned Runs	2	0

Home Runs Allowed	1	0

Strikeouts	2	2

Walks	4	1

ERA	4.15	0.00

WHIP	1.62	1.29

Who Should I Trade? Player Projections
	John Klein SP,RP - MIN	Welinton Herrera RP - COL
2026 Projections


Games Played	11	1

Games Started	1	0

Innings Pitched	10.9	0.6

Wins	1	0

Losses	1	0

Saves	0	0

Blown Saves	0	0

Holds	0	0

Hits Allowed	11	1

Earned Runs	5	1

Home Runs Allowed	2	0

Strikeouts	10	1

Walks	4	1

ERA	4.55	7.03

WHIP	1.47	1.56

Who Should I Trade? Player Notes
	John Klein SP,RP - MIN	Welinton Herrera RP - COL
News
	The Twins optioned John Klein to Triple-A St. Paul. Ari Koslow Sun, May 31st	Welinton Herrera will undergo season-ending Tommy John surgery. Nicholas Rodriguez Tue, Jun 30th
	The Twins recalled RHP John Klein from Triple-A St. Paul. Ari Koslow Sat, May 30th	Welinton Herrera is receiving a second opinion on his UCL tear. Nicholas Rodriguez Sat, Jun 6th
	The Twins optioned RHP John Klein to Triple-A St. Paul. Ari Koslow Thu, May 7th	Welinton Herrera (elbow) has been transferred to the 60-day IL by the Colorado Rockies. The move allows an open spot on the 40-man roster for righthander TJ Shook, who was called up on Monday. David Leisering Mon, Jun 1st
	John Klein has been recalled from Triple-A St. Paul. Vince DiSilvio Sat, May 2nd	The Rockies placed Welinton Herrera on the 15-day injured list with left elbow inflammation. Ari Koslow Sat, May 30th
	The Twins have optioned right-hander John Klein to Triple-A St. Paul. Brenton Kemp Tue, Mar 10th	The Rockies recalled LHP Welinton Herrera from Triple-A Albuquerque. Ari Koslow Mon, May 25th
Notes
There are no recent notes for these players

Who Should I Trade? Player Schedules
Date	Opp	Opp Pitcher	VBR	Opp	Opp Pitcher	VBR
	John Klein SP,RP - MIN			Welinton Herrera RP - COL
Thu, Mar 26th	@ BAL	Trevor Rogers (6-7)	#75
Sat, Mar 28th	@ BAL	Kyle Bradish (7-9)	#38	@ MIA	Eury Perez (5-8)	#39
Sun, Mar 29th	@ BAL	Shane Baz (4-9)	#76	@ MIA	Max Meyer (9-1)	#81
Mon, Mar 30th	@ KC	Kris Bubic (3-2)	#117	@ TOR	Cody Ponce (0-0)
Wed, Apr 1st	@ KC	Noah Cameron (5-8)	#88	@ TOR	Kevin Gausman (4-10)	#28
Thu, Apr 2nd	@ KC	Cole Ragans (1-4)
Fri, Apr 3rd	vs TB	Joe Boyle (0-1)	#193	vs PHI	Aaron Nola (3-8)	#59
Sat, Apr 4th	vs TB	Steven Matz (4-4)	#189	vs PHI	Jesus Luzardo (9-5)	#9
Sun, Apr 5th	vs TB	Nick Martinez (10-2)	#94	vs PHI	Taijuan Walker (1-4)
Mon, Apr 6th	vs DET	Casey Mize (4-6)	#49	vs HOU	Cody Bolton (0-1)	#313
Tue, Apr 7th	vs DET	Tarik Skubal (7-5)	#2	vs HOU	Mike Burrows (4-9)	#178
Wed, Apr 8th	vs DET	Framber Valdez (5-7)	#34	vs HOU	Cristian Javier (1-1)	#190
Thu, Apr 9th	vs DET	Jack Flaherty (3-8)	#79	@ SD	Randy Vasquez (6-6)	#241
Fri, Apr 10th	@ TOR	Patrick Corbin (3-4)	#314	@ SD	Walker Buehler (6-5)	#220
Sat, Apr 11th	@ TOR	Eric Lauer (5-5)	#360	@ SD	German Marquez (4-2)	#370
Sun, Apr 12th	@ TOR	Max Scherzer (1-4)	#156	@ SD	Nick Pivetta (1-2)	#116
Mon, Apr 13th	vs BOS	Garrett Crochet (3-3)	#182
Tue, Apr 14th	vs BOS	Sonny Gray (12-2)	#29	@ HOU	Colton Gordon (0-0)	#250
Wed, Apr 15th	vs BOS	Connelly Early (7-5)	#169	@ HOU	Spencer Arrighetti (7-5)	#202
Fri, Apr 17th	vs CIN	Brandon Williamson (2-3)	#420	vs LAD	Tyler Glasnow (3-0)	#67
Sat, Apr 18th	vs CIN	Andrew Abbott (5-6)	#106	vs LAD	Emmet Sheehan (4-7)	#43
Sun, Apr 19th	vs CIN	Brady Singer (5-9)	#153	vs LAD	Roki Sasaki (4-5)	#97
Tue, Apr 21st	@ NYM	Nolan McLean (7-7)	#30	vs SD	Randy Vasquez (6-6)	#241
Wed, Apr 22nd	@ NYM	Clay Holmes (4-4)	#126	vs SD	Walker Buehler (6-5)	#220
Thu, Apr 23rd	@ NYM	Christian Scott (3-2)	#56	vs SD	Matt Waldron (1-2)	#295
Fri, Apr 24th	@ TB	Drew Rasmussen (9-5)	#16	@ NYM	Freddy Peralta (5-9)	#42
Sat, Apr 25th	@ TB	Shane McClanahan (9-6)	#41
Sun, Apr 26th	@ TB	Griffin Jax (6-7)	#63	@ NYM	Kodai Senga (0-7)	#196
Mon, Apr 27th	vs SEA	Luis Castillo (3-9)	#62
Tue, Apr 28th	vs SEA	Logan Gilbert (8-6)	#11	@ CIN	Chase Burns (12-1)	#23
Wed, Apr 29th	vs SEA	George Kirby (8-9)	#20	@ CIN	Brandon Williamson (2-3)	#420
Thu, Apr 30th	vs TOR	Kevin Gausman (4-10)	#28	@ CIN	Andrew Abbott (5-6)	#106
Fri, May 1st	vs TOR	Patrick Corbin (3-4)	#314	vs ATL	Grant Holmes (6-4)	#146
Sat, May 2nd	vs TOR	Dylan Cease (7-5)	#10	vs ATL	Chris Sale (11-6)	#6
Sun, May 3rd	vs TOR	Trey Yesavage (4-5)	#66	vs ATL	Spencer Strider (4-2)	#309
Tue, May 5th	@ WSH	Cade Cavalli (7-4)	#54
Wed, May 6th	@ WSH	Miles Mikolas (3-7)	#292	vs NYM	Freddy Peralta (5-9)	#42
Thu, May 7th	@ WSH	Jake Irvin (2-4)	#177	vs NYM	Christian Scott (3-2)	#56
Fri, May 8th	@ CLE	Parker Messick (8-6)	#47	@ PHI	Jesus Luzardo (9-5)	#9
Sat, May 9th	@ CLE	Tanner Bibee (4-10)	#58	@ PHI	Aaron Nola (3-8)	#59
Sun, May 10th	@ CLE	Gavin Williams (10-5)	#24	@ PHI	Cristopher Sanchez (13-4)	#4
Tue, May 12th	vs MIA	Eury Perez (5-8)	#39	@ PIT	Paul Skenes (9-9)	#3
Wed, May 13th	vs MIA	Max Meyer (9-1)	#81	@ PIT	Mitch Keller (6-7)	#127
Thu, May 14th	vs MIA	Braxton Garrett (0-1)	#172	@ PIT	Mason Montgomery (4-3)	#102
Fri, May 15th	vs MIL	Coleman Crow (0-1)	#215	vs ARI	Merrill Kelly (8-8)	#119
Sat, May 16th	vs MIL	Logan Henderson (4-1)	#46	vs ARI	Eduardo Rodriguez (9-3)	#121
Sun, May 17th	vs MIL	Robert Gasser (3-4)	#120	vs ARI	Michael Soroka (8-3)	#65
Mon, May 18th	vs HOU	Tatsuya Imai (6-4)	#122	vs TEX	MacKenzie Gore (6-8)	#31
Tue, May 19th	vs HOU	Jason Alexander (1-1)	#421	vs TEX	Tyler Alexander (1-1)	#161
Wed, May 20th	vs HOU	Mike Burrows (4-9)	#178	vs TEX	Jack Leiter (3-7)	#128
Fri, May 22nd	@ BOS	Payton Tolle (6-6)	#51	@ ARI	Michael Soroka (8-3)	#65
Sat, May 23rd	@ BOS	Jovani Moran (2-2)	#162	@ ARI	Zac Gallen (3-9)	#175
Sun, May 24th	@ BOS	Sonny Gray (12-2)	#29	@ ARI	Ryne Nelson (3-5)	#197
Mon, May 25th	@ CWS	Anthony Kay (7-4)	#210	@ LAD	Emmet Sheehan (4-7)	#43
Tue, May 26th	@ CWS	Sean Burke (7-5)	#78	@ LAD	Eric Lauer (5-5)	#360
Wed, May 27th	@ CWS	David Sandlin (2-1)	#311	@ LAD	Shohei Ohtani (8-2)	#1
Thu, May 28th	@ CWS	Davis Martin (9-5)	#91
Fri, May 29th	@ PIT	Jared Jones (2-1)	#45	vs SF	Logan Webb (5-7)	#19
Sat, May 30th	@ PIT	Mitch Keller (6-7)	#127	vs SF	Adrian Houser (2-7)	#191
Sun, May 31st	@ PIT	Braxton Ashcraft (10-4)	#32	vs SF	Robbie Ray (9-6)	#96
Mon, Jun 1st	vs CWS	David Sandlin (2-1)	#311	@ LAA	Jose Soriano (9-6)	#44
Tue, Jun 2nd	vs CWS	Davis Martin (9-5)	#91	@ LAA	Grayson Rodriguez (3-3)	#134
Wed, Jun 3rd	vs CWS	Erick Fedde (5-6)	#400	@ LAA	Walbert Urena (6-7)	#328
Thu, Jun 4th	vs KC	Seth Lugo (4-6)	#133
Fri, Jun 5th	vs KC	Michael Wacha (5-7)	#69	vs MIL	Brandon Sproat (3-6)	#144
Sat, Jun 6th	vs KC	Luinder Avila (5-3)	#277	vs MIL	Jacob Misiorowski (11-4)	#7
Sun, Jun 7th	vs KC	Noah Cameron (5-8)	#88	vs MIL	Shane Drohan (5-4)	#74
Tue, Jun 9th	@ DET	Troy Melton (5-1)	#95	vs CHC	Colin Rea (7-7)	#186
Wed, Jun 10th	@ DET	Framber Valdez (5-7)	#34	vs CHC	Shota Imanaga (7-8)	#27
Thu, Jun 11th	@ DET	Keider Montero (7-6)	#147	vs CHC	Edward Cabrera (5-4)	#115
Fri, Jun 12th	vs STL	Kyle Leahy (7-4)	#109	@ ATH	Gage Jump (3-6)	#98
Sat, Jun 13th	vs STL	Matthew Liberatore (5-8)	#104	@ ATH	Joey Estes (0-0)	#409
Sun, Jun 14th	vs STL	Michael McGreevy (4-8)	#89	@ ATH	Jeffrey Springs (3-10)	#251
Mon, Jun 15th	@ TEX	MacKenzie Gore (6-8)	#31	@ CHC	Shota Imanaga (7-8)	#27
Tue, Jun 16th	@ TEX	Kumar Rocker (4-8)	#92	@ CHC	Edward Cabrera (5-4)	#115
Thu, Jun 18th	@ TEX	Jack Leiter (3-7)	#128
Fri, Jun 19th	@ ARI	Michael Soroka (8-3)	#65	vs PIT	Bubba Chandler (3-8)	#112
Sat, Jun 20th	@ ARI	Zac Gallen (3-9)	#175	vs PIT	Paul Skenes (9-9)	#3
Sun, Jun 21st	@ ARI			vs PIT	Jared Jones (2-1)	#45
Mon, Jun 22nd	vs LAD	Will Klein (3-4)	#184	vs BOS	Jake Bennett (6-3)	#87
Tue, Jun 23rd	vs LAD	Justin Wrobleski (11-2)	#68	vs BOS	Sonny Gray (12-2)	#29
Wed, Jun 24th	vs LAD	Shohei Ohtani (8-2)	#1	vs BOS	Ranger Suarez (4-3)	#25
Fri, Jun 26th	vs COL	Tomoyuki Sugano (10-4)	#433	@ MIN	Taj Bradley (9-4)	#57
Sat, Jun 27th	vs COL	Michael Lorenzen (3-9)	#432	@ MIN	Mike Paredes (0-3)	#298
Sun, Jun 28th	vs COL	Ryan Feltner (3-5)	#431	@ MIN	Connor Prielipp (3-5)	#103
Mon, Jun 29th	@ HOU	Peter Lambert (8-5)	#129	vs MIA	Sandy Alcantara (10-6)	#55
Tue, Jun 30th	@ HOU	Mike Burrows (4-9)	#178	vs MIA	Eury Perez (5-8)	#39
Wed, Jul 1st	@ HOU	Tatsuya Imai (6-4)	#122	vs MIA	Max Meyer (9-1)	#81
Fri, Jul 3rd	@ NYY	Gerrit Cole (3-5)	#26	vs SF	Logan Webb (5-7)	#19
Sat, Jul 4th	@ NYY	Brendan Beck (0-1)	#229	vs SF	Robbie Ray (9-6)	#96
Sun, Jul 5th	@ NYY	Ryan Weathers (4-7)	#60	vs SF	Tyler Mahle (3-9)	#80
Tue, Jul 7th	vs CLE	Joey Cantillo (8-6)	#77	@ LAD	Justin Wrobleski (11-2)	#68
Wed, Jul 8th	vs CLE	Slade Cecconi (4-7)	#113	@ LAD	Roki Sasaki (4-5)	#97
Thu, Jul 9th	vs CLE	Gavin Williams (10-5)	#24	@ SF	Carson Whisenhunt (2-1)	#180
Fri, Jul 10th	vs LAA	Grayson Rodriguez (3-3)	#134	@ SF	Robbie Ray (9-6)	#96
Sat, Jul 11th	vs LAA	Ryan Johnson (2-5)	#170	@ SF	Tyler Mahle (3-9)	#80
Sun, Jul 12th	vs LAA	Jose Soriano (9-6)	#44	@ SF	Trevor McDonald (3-7)	#256
Fri, Jul 17th	@ CHC	Colin Rea (7-7)	#186	vs CIN	Brady Singer (5-9)	#153
Sat, Jul 18th	@ CHC	Matthew Boyd (6-1)	#35	vs CIN	Rhett Lowder (3-7)	#276
Sun, Jul 19th	@ CHC	Shota Imanaga (7-8)	#27	vs CIN	Hunter Greene (2-2)	#22
Mon, Jul 20th	@ CLE	Tanner Bibee (4-10)	#58	vs WSH	Andrew Alvarez (2-3)	#152
Tue, Jul 21st	@ CLE	Parker Messick (8-6)	#47	vs WSH	Carson Palmquist (0-1)	#331
Wed, Jul 22nd	@ CLE	Slade Cecconi (4-7)	#113	vs WSH	Cade Cavalli (7-4)	#54
Thu, Jul 23rd	@ CLE	Gavin Williams (10-5)	#24
Fri, Jul 24th	vs ATH	Jacob Lopez (5-4)	#221	@ MIL	Shane Drohan (5-4)	#74
Sat, Jul 25th	vs ATH	Brady Basso	#201	@ MIL	Robert Gasser (3-4)	#120
Sun, Jul 26th	vs ATH	Jeffrey Springs (3-10)	#251	@ MIL	Jacob Misiorowski (11-4)	#7
Tue, Jul 28th	vs KC	Seth Lugo (4-6)	#133	@ SD	Michael King (6-7)	#50
Wed, Jul 29th	vs KC	Randy Dobnak (0-0)	#430	@ SD	Griffin Canning (1-9)	#166
Thu, Jul 30th	vs KC	Noah Cameron (5-8)	#88
Fri, Jul 31st	@ SEA	Bryan Woo (7-7)	#13	vs KC	Michael Wacha (5-7)	#69
Sat, Aug 1st	@ SEA	Logan Gilbert (8-6)	#11	vs KC	Luinder Avila (5-3)	#277
Sun, Aug 2nd	@ SEA	George Kirby (8-9)	#20	vs KC	Seth Lugo (4-6)	#133
Tue, Aug 4th	@ KC	Randy Dobnak (0-0)	#430	vs TB	Shane McClanahan (9-6)	#41
Wed, Aug 5th	@ KC	Noah Cameron (5-8)	#88	vs TB	Nick Martinez (10-2)	#94
Thu, Aug 6th	@ KC	Michael Wacha (5-7)	#69
Fri, Aug 7th	@ MIL			@ STL
Sat, Aug 8th	@ MIL			@ STL
Sun, Aug 9th	@ MIL			@ STL
Mon, Aug 10th	vs BAL			@ ARI
Tue, Aug 11th	vs BAL			@ ARI
Wed, Aug 12th	vs BAL			@ ARI
Thu, Aug 13th	vs PHI
Sat, Aug 15th	vs PHI			@ SF
Sun, Aug 16th	vs PHI			@ SF
Mon, Aug 17th	vs ATL			vs LAD
Tue, Aug 18th	vs ATL			vs LAD
Wed, Aug 19th	vs ATL			vs LAD
Fri, Aug 21st	@ SD			vs CLE
Sat, Aug 22nd	@ SD			vs CLE
Sun, Aug 23rd	@ SD			vs CLE
Mon, Aug 24th	@ ATH			@ WSH
Tue, Aug 25th	@ ATH			@ WSH
Wed, Aug 26th	@ ATH			@ WSH
Fri, Aug 28th	vs CWS			@ ATL
Sat, Aug 29th	vs CWS			@ ATL
Sun, Aug 30th	vs CWS			@ ATL
Mon, Aug 31st	vs DET			vs BAL
Tue, Sep 1st	vs DET			vs BAL
Wed, Sep 2nd	vs DET			vs BAL
Fri, Sep 4th	@ CWS			vs STL
Sat, Sep 5th	@ CWS			vs STL
Sun, Sep 6th	@ CWS			vs STL
Mon, Sep 7th	@ DET
Tue, Sep 8th	@ DET			@ NYY
Wed, Sep 9th	@ DET			@ NYY
Fri, Sep 11th	vs CLE			@ DET
Sat, Sep 12th	vs CLE			@ DET
Sun, Sep 13th	vs CLE			@ DET
Mon, Sep 14th	vs NYY			vs SD
Tue, Sep 15th	vs NYY			vs SD
Wed, Sep 16th	vs NYY			vs SD
Thu, Sep 17th	@ LAA			vs SD
Fri, Sep 18th	@ LAA			vs SEA
Sat, Sep 19th	@ LAA			vs SEA
Sun, Sep 20th	@ LAA			vs SEA
Mon, Sep 21st	@ SF
Tue, Sep 22nd	@ SF			vs ARI
Wed, Sep 23rd	@ SF			vs ARI
Fri, Sep 25th	vs TEX			@ CWS
Sat, Sep 26th	vs TEX			@ CWS
Sun, Sep 27th	vs TEX			@ CWS
Fri, Mar 27th				@ MIA	Sandy Alcantara (10-6)	#55
Tue, Mar 31st				@ TOR	Max Scherzer (1-4)	#156
Thu, Apr 16th				@ HOU	Ryan Weiss (0-3)	#373
Mon, Apr 20th				vs LAD	Justin Wrobleski (11-2)	#68
Mon, May 4th				vs NYM	Huascar Brazoban (4-2)	#194
Thu, May 21st				@ ARI	Eduardo Rodriguez (9-3)	#121
Wed, Jun 17th				@ CHC	Javier Assad (6-1)	#230
Thu, Jul 2nd				vs MIA	Ryan Gusto (0-2)	#205
Mon, Jul 6th				@ LAD	Eric Lauer (5-5)	#360
Mon, Aug 3rd				vs TB	Ian Seymour (6-3)	#70
Fri, Aug 14th				@ SF
Thu, Aug 27th				@ WSH
Thu, Sep 10th				@ NYY
Thu, Sep 24th				vs ARI

Who Should I Trade?

John Klein for Welinton Herrera (2026)

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