2021 Player Impact

Standardized Seasonal Performance Index

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2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2001

Top Batter

Vladimir Guerrero Jr.

+14.71

Westre

Top Starter

Jacob deGrom

+6.44

Duster

Top Reliever

Josh Hader

+9.24

Hawkins

Rank	Player	Impact	Franchise	Source
#1	Vladimir Guerrero Jr. Westre	+14.71	Westre	MLB_REF
#2	Juan Soto T	+14.27	T	MLB_REF
#3	Bryce Harper Hawkins	+13.92	Believe 2021	MLB_REF
#4	Trea Turner Westre	+13.68	Westre	MLB_REF
#5	Shohei Ohtani Unowned	+13.6	Free Agent	MLB_REF
#6	Fernando Tatis Jr. Hemp	+13.44	Trout Fishin	MLB_REF
#7	Jose Ramirez Jet	+12.28	🐐	MLB_REF
#8	Bo Bichette Sage	+11.66	Cole4Cy	MLB_REF
#9	Starling Marte Kolk	+11.64	Kettlebell	MLB_REF
#10	Freddie Freeman Duster	+10.73	DusterJ	MLB_REF
#11	Marcus Semien Sage	+10.72	Cole4Cy	MLB_REF
#12	Cedric Mullins Allen	+10.31	Bat Flip$ LLC	MLB_REF
#13	Paul Goldschmidt Jet	+10.1	🐐	MLB_REF
#14	Matt Olson Duster	+9.94	DusterJ	MLB_REF
#15	Teoscar Hernandez Hawkins	+9.92	Believe 2021	MLB_REF
#16	Aaron Judge Dille	+9.83	Belli Flop	MLB_REF
#17	Nick Castellanos Sage	+9.83	Cole4Cy	MLB_REF
#18	Rafael Devers Wilson	+9.57	FIREBALL 🔥🔥🔥	MLB_REF
#19	Kyle Tucker Duster	+9.46	DusterJ	MLB_REF
#20	Tyler O'Neill Duster	+9.26	DusterJ	MLB_REF
#21	Austin Riley T	+8.96	T	MLB_REF
#22	Bryan Reynolds Kolk	+8.95	Kettlebell	MLB_REF
#23	Ronald Acuna Jr. Unowned	+8.63	Free Agent	MLB_REF
#24	Brandon Crawford Duster	+8.49	DusterJ	MLB_REF
#25	Salvador Perez Hawkins	+8.27	Believe 2021	MLB_REF
#26	Manny Machado Hemp	+8.25	Trout Fishin	MLB_REF
#27	Ozzie Albies T	+8.05	T	MLB_REF
#28	Joey Votto Dille	+7.84	Belli Flop	MLB_REF
#29	Jose Altuve Allen	+7.71	Bat Flip$ LLC	MLB_REF
#30	Brandon Lowe Hemp	+7.63	Trout Fishin	MLB_REF
#31	Jesse Winker Duster	+7.54	DusterJ	MLB_REF
#32	Max Muncy Jet	+7.5	🐐	MLB_REF
#33	Jorge Polanco Jet	+7.42	🐐	MLB_REF
#34	Yordan Alvarez Kolk	+7.41	Kettlebell	MLB_REF
#35	Whit Merrifield Sage	+7.32	Cole4Cy	MLB_REF
#36	Randy Arozarena Kolk	+7.12	Kettlebell	MLB_REF
#37	Xander Bogaerts Kolk	+7.01	Kettlebell	MLB_REF
#38	Carlos Correa Dille	+6.92	Belli Flop	MLB_REF
#39	J.D. Martinez Hawkins	+6.84	Believe 2021	MLB_REF
#40	Jonathan India Sage	+6.83	Cole4Cy	MLB_REF
#41	C.J. Cron Allen	+6.78	Bat Flip$ LLC	MLB_REF
#42	Javier Baez Jet	+6.74	🐐	MLB_REF
#43	Tim Anderson Allen	+6.71	Bat Flip$ LLC	MLB_REF
#44	Pete Alonso Wilson	+6.59	FIREBALL 🔥🔥🔥	MLB_REF
#45	Jose Abreu Hemp	+6.58	Trout Fishin	MLB_REF
#46	Yuli Gurriel Jet	+6.38	🐐	MLB_REF
#47	Kyle Schwarber Hawkins	+6.3	Believe 2021	MLB_REF
#48	Mitch Haniger Duster	+6.29	DusterJ	MLB_REF
#49	Justin Turner Duster	+6.22	DusterJ	MLB_REF
#50	Brandon Belt Jet	+6.21	🐐	MLB_REF

Rank	Player	Impact	Franchise	Source
#1	Jacob deGrom Duster	+6.44	DusterJ	MLB_REF
#2	Julio Urias Madrock	+5.91	Cornfest King	MLB_REF
#3	Max Scherzer Dille	+5.83	Belli Flop	MLB_REF
#4	Walker Buehler Sage	+5.53	Cole4Cy	MLB_REF
#5	Carlos Rodon Duster	+4.9	DusterJ	MLB_REF
#6	Adam Wainwright Allen	+4.87	Bat Flip$ LLC	MLB_REF
#7	Zack Wheeler Hemp	+4.57	Trout Fishin	MLB_REF
#8	Gerrit Cole Sage	+4.47	Cole4Cy	MLB_REF
#9	Corbin Burnes Madrock	+4.44	Cornfest King	MLB_REF
#10	Kevin Gausman Allen	+4.4	Bat Flip$ LLC	MLB_REF
#11	Robbie Ray Dille	+4.12	Belli Flop	MLB_REF
#12	Charlie Morton Hemp	+3.97	Trout Fishin	MLB_REF
#13	Max Fried Madrock	+3.97	Cornfest King	MLB_REF
#14	Freddy Peralta Duster	+3.73	DusterJ	MLB_REF
#15	Brandon Woodruff T	+3.72	T	MLB_REF
#16	Anthony DeSclafani Kolk	+3.61	Kettlebell	MLB_REF
#17	Lance Lynn Allen	+3.58	Bat Flip$ LLC	MLB_REF
#18	Chris Bassitt Westre	+3.52	Westre	MLB_REF
#19	Trevor Bauer Westre	+3.24	Westre	MLB_REF
#20	Jose Berrios Kolk	+3.22	Kettlebell	MLB_REF
#21	Joe Musgrove T	+3.14	T	MLB_REF
#22	Logan Webb Westre	+3.11	Westre	MLB_REF
#23	Frankie Montas Sage	+3	Cole4Cy	MLB_REF
#24	Lance McCullers Jr. Sage	+2.97	Cole4Cy	MLB_REF
#25	Clayton Kershaw Jet	+2.88	🐐	MLB_REF
#26	Tyler Glasnow T	+2.77	T	MLB_REF
#27	Lucas Giolito Dille	+2.75	Belli Flop	MLB_REF
#28	Alek Manoah Allen	+2.74	Bat Flip$ LLC	MLB_REF
#29	Chris Flexen Sage	+2.71	Cole4Cy	MLB_REF
#30	Jack Flaherty Unowned	+2.69	Free Agent	MLB_REF
#31	Sandy Alcantara Allen	+2.67	Bat Flip$ LLC	MLB_REF
#32	Marcus Stroman Jet	+2.66	🐐	MLB_REF
#33	Aaron Civale Unowned	+2.66	Free Agent	MLB_REF
#34	Shohei Ohtani Unowned	+2.58	Free Agent	MLB_REF
#35	Jose Urquidy Sage	+2.46	Cole4Cy	MLB_REF
#36	Tyler Mahle Wilson	+2.44	FIREBALL 🔥🔥🔥	MLB_REF
#37	Luis Garcia T	+2.4	T	MLB_REF
#38	Framber Valdez Westre	+2.33	Westre	MLB_REF
#39	Hyun-Jin Ryu Unowned	+2.25	Free Agent	MLB_REF
#40	Dylan Cease Allen	+2.21	Bat Flip$ LLC	MLB_REF
#41	Trevor Rogers Duster	+2.21	DusterJ	MLB_REF
#42	Steven Matz Unowned	+2.15	Free Agent	MLB_REF
#43	Nathan Eovaldi T	+2.13	T	MLB_REF
#44	Cal Quantrill Allen	+2.11	Bat Flip$ LLC	MLB_REF
#45	Spencer Turnbull Unowned	+2.09	Free Agent	MLB_REF
#46	Wade Miley Unowned	+2	Free Agent	MLB_REF
#47	Zack Greinke Dille	+1.9	Belli Flop	MLB_REF
#48	Alex Wood T	+1.86	T	MLB_REF
#49	Adrian Houser Unowned	+1.86	Free Agent	MLB_REF
#50	Eric Lauer Hawkins	+1.81	Believe 2021	MLB_REF

Rank	Player	Impact	Franchise	Source
#1	Josh Hader Hawkins	+9.24	Believe 2021	MLB_REF
#2	Liam Hendriks Sage	+8.68	Cole4Cy	MLB_REF
#3	Craig Kimbrel Sage	+7.64	Cole4Cy	MLB_REF
#4	Blake Treinen T	+7.07	T	MLB_REF
#5	Raisel Iglesias Westre	+6.84	Westre	MLB_REF
#6	Giovanny Gallegos Wilson	+6.51	FIREBALL 🔥🔥🔥	MLB_REF
#7	Paul Sewald Wilson	+6.23	FIREBALL 🔥🔥🔥	MLB_REF
#8	Kenley Jansen Dille	+6.15	Belli Flop	MLB_REF
#9	Devin Williams Duster	+5.97	DusterJ	MLB_REF
#10	Aroldis Chapman Jet	+5.56	🐐	MLB_REF
#11	Jordan Romano Wilson	+5.46	FIREBALL 🔥🔥🔥	MLB_REF
#12	Jake McGee Sage	+5.44	Cole4Cy	MLB_REF
#13	Emmanuel Clase Wilson	+5.39	FIREBALL 🔥🔥🔥	MLB_REF
#14	Edwin Diaz Kolk	+5.31	Kettlebell	MLB_REF
#15	Ryan Pressly Madrock	+5.12	Cornfest King	MLB_REF
#16	Will Smith Hemp	+5.01	Trout Fishin	MLB_REF
#17	Luke Jackson T	+5	T	MLB_REF
#18	Diego Castillo Sage	+4.9	Cole4Cy	MLB_REF
#19	Tyler Rogers Kolk	+4.85	Kettlebell	MLB_REF
#20	Ryan Tepera Madrock	+4.81	Cornfest King	MLB_REF
#21	Scott Barlow Unowned	+4.59	Free Agent	MLB_REF
#22	Brad Boxberger Kolk	+4.58	Kettlebell	MLB_REF
#23	Andrew Chafin Hawkins	+4.57	Believe 2021	MLB_REF
#24	Chad Green Sage	+4.55	Cole4Cy	MLB_REF
#25	Casey Sadler Unowned	+4.42	Free Agent	MLB_REF
#26	Matt Barnes Hemp	+4.3	Trout Fishin	MLB_REF
#27	Art Warren Unowned	+4.29	Free Agent	MLB_REF
#28	Mark Melancon Hawkins	+4.1	Believe 2021	MLB_REF
#29	Jimmy Nelson Unowned	+4.1	Free Agent	MLB_REF
#30	Kendall Graveman Unowned	+4.09	Free Agent	MLB_REF
#31	David Bednar Unowned	+4.03	Free Agent	MLB_REF
#32	Aaron Loup Unowned	+3.9	Free Agent	MLB_REF
#33	Tyler Matzek Jet	+3.87	🐐	MLB_REF
#34	Alex Reyes Unowned	+3.86	Free Agent	MLB_REF
#35	Daniel Hudson Unowned	+3.75	Free Agent	MLB_REF
#36	Tejay Antone Dille	+3.56	Belli Flop	MLB_REF
#37	James Karinchak Unowned	+3.5	Free Agent	MLB_REF
#38	Taylor Rogers Unowned	+3.48	Free Agent	MLB_REF
#39	Lucas Sims Dille	+3.48	Belli Flop	MLB_REF
#40	Alex Vesia Unowned	+3.48	Free Agent	MLB_REF
#41	Jonathan Loaisiga Madrock	+3.44	Cornfest King	MLB_REF
#42	Hector Neris Hemp	+3.38	Trout Fishin	MLB_REF
#43	Aaron Bummer Unowned	+3.37	Free Agent	MLB_REF
#44	Josh Staumont Duster	+3.15	DusterJ	MLB_REF
#45	Michael Kopech Dille	+3.13	Belli Flop	MLB_REF
#46	Ryne Stanek Madrock	+3.12	Cornfest King	MLB_REF
#47	Ian Kennedy Dille	+3.12	Belli Flop	MLB_REF
#48	Andrew Kittredge Unowned	+3.1	Free Agent	MLB_REF
#49	Joe Barlow Sage	+3.07	Cole4Cy	MLB_REF
#50	Genesis Cabrera Duster	+3.01	DusterJ	MLB_REF