With reference to the 2023 campaign, Jordan Lyles ranks first in defeats with 17. Holding down 2nd place is Zack Greinke, bearing a defeats total of 15. Having a mark of 14, Lucas Giolito comes in at the 3rd position. With the fourth and fifth spot are Johan Oviedo (14) along with Rich Hill (14).
2023 MLB Pitching Losses Leaders
| L Rank | Team | L |
|---|
| 1st | Jordan Lyles | 17 |
| 2nd | Zack Greinke | 15 |
| 3rd | Lucas Giolito | 14 |
| 4th | Johan Oviedo | 14 |
| 5th | Rich Hill | 14 |
| 6th | Kyle Freeland | 14 |
| 7th | Miles Mikolas | 13 |
| 8th | Logan Webb | 13 |
| 9th | Patrick Corbin | 13 |
| 10th | Patrick Sandoval | 13 |
| 11th | Michael Kopech | 12 |
| 12th | JP Sears | 12 |
| 13th | Hunter Brown | 12 |
| 14th | Josiah Gray | 12 |
| 15th | Charlie Morton | 12 |
| 16th | Sandy Alcantara | 12 |
| 17th | Jose Berrios | 11 |
| 18th | Lance Lynn | 11 |
| 19th | Jordan Montgomery | 11 |
| 20th | Brady Singer | 11 |
| 21st | Joey Wentz | 11 |
| 22nd | Adam Wainwright | 11 |
| 23rd | Griffin Jax | 10 |
| 24th | Carlos Hernandez | 10 |
| 25th | George Kirby | 10 |
| 26th | Framber Valdez | 10 |
| 27th | Trevor Williams | 10 |
| 28th | Brayan Bello | 10 |
| 29th | Reid Detmers | 10 |
| 30th | MacKenzie Gore | 10 |
2022 MLB Pitching Losses Leaders
| L Rank | Team | L |
|---|
| 1st | Patrick Corbin | 19 |
| 2nd | Marco Gonzales | 15 |
| 3rd | Madison Bumgarner | 15 |
| 4th | Brad Keller | 14 |
| 5th | Miles Mikolas | 13 |
| 6th | Aaron Nola | 13 |
| 7th | German Marquez | 13 |
| 8th | Cole Irvin | 13 |
| 9th | Kris Bubic | 13 |
| 10th | Erick Fedde | 13 |
| 11th | Daniel Lynch | 13 |
| 12th | Hunter Greene | 13 |
| 13th | Nick Pivetta | 12 |
| 14th | Robbie Ray | 12 |
| 15th | Adam Wainwright | 12 |
| 16th | Mitch Keller | 12 |
| 17th | JT Brubaker | 12 |
| 18th | Frankie Montas | 12 |
| 19th | Alex Wood | 12 |
| 20th | Zach Plesac | 12 |
| 21st | Mike Minor | 12 |
| 22nd | Joan Adon | 12 |
| 23rd | Gregory Soto | 11 |
| 24th | Jordan Lyles | 11 |
| 25th | Kyle Freeland | 11 |
| 26th | Triston McKenzie | 11 |
| 27th | Tyler Alexander | 11 |
| 28th | Chad Kuhl | 11 |
| 29th | Trevor Rogers | 11 |
| 30th | Mark Melancon | 10 |
2021 MLB Pitching Losses Leaders
| L Rank | Team | L |
|---|
| 1st | Luis Castillo | 16 |
| 2nd | Patrick Corbin | 16 |
| 3rd | Sandy Alcantara | 15 |
| 4th | Cole Irvin | 15 |
| 5th | Jorge Lopez | 14 |
| 6th | Matt Harvey | 14 |
| 7th | Jake Arrieta | 14 |
| 8th | Marcus Stroman | 13 |
| 9th | Jordan Lyles | 13 |
| 10th | Adbert Alzolay | 13 |
| 11th | JT Brubaker | 13 |
| 12th | Kolby Allard | 12 |
| 13th | Zach Davies | 12 |
| 14th | Tarik Skubal | 12 |
| 15th | Jon Gray | 12 |
| 16th | Mike Foltynewicz | 12 |
| 17th | Mike Minor | 12 |
| 18th | Brad Keller | 12 |
| 19th | John Gant | 11 |
| 20th | German Marquez | 11 |
| 21st | Tyler Anderson | 11 |
| 22nd | Yu Darvish | 11 |
| 23rd | Taijuan Walker | 11 |
| 24th | Merrill Kelly | 11 |
| 25th | Mitch Keller | 11 |
| 26th | Sean Manaea | 10 |
| 27th | Zack Wheeler | 10 |
| 28th | Hyun Jin Ryu | 10 |
| 29th | Brandon Woodruff | 10 |
| 30th | Antonio Senzatela | 10 |
2020 MLB Pitching Losses Leaders
| L Rank | Team | L |
|---|
| 1st | Luke Weaver | 9 |
| 2nd | Trevor Williams | 8 |
| 3rd | Matthew Boyd | 7 |
| 4th | Rick Porcello | 7 |
| 5th | Patrick Corbin | 7 |
| 6th | German Marquez | 6 |
| 7th | Luis Castillo | 6 |
| 8th | Aaron Civale | 6 |
| 9th | Kyle Gibson | 6 |
| 10th | Adrian Houser | 6 |
| 11th | Jordan Lyles | 6 |
| 12th | Mike Minor | 6 |
| 13th | Kolby Allard | 6 |
| 14th | Kris Bubic | 6 |
| 15th | Cole Sulser | 5 |
| 16th | Brandon Woodruff | 5 |
| 17th | Kyle Hendricks | 5 |
| 18th | Aaron Nola | 5 |
| 19th | Chris Paddack | 5 |
| 20th | Martin Perez | 5 |
| 21st | Robbie Ray | 5 |
| 22nd | Brady Singer | 5 |
| 23rd | Alec Mills | 5 |
| 24th | Frankie Montas | 5 |
| 25th | Anibal Sanchez | 5 |
| 26th | Austin Voth | 5 |
| 27th | Alex Cobb | 5 |
| 28th | Steven Matz | 5 |
| 29th | Patrick Sandoval | 5 |
| 30th | Joe Musgrove | 5 |
2019 MLB Pitching Losses Leaders
| L Rank | Team | L |
|---|
| 1st | Spencer Turnbull | 17 |
| 2nd | Reynaldo Lopez | 15 |
| 3rd | Sandy Alcantara | 14 |
| 4th | Merrill Kelly | 14 |
| 5th | Miles Mikolas | 14 |
| 6th | Jakob Junis | 14 |
| 7th | Dylan Bundy | 14 |
| 8th | Brad Keller | 14 |
| 9th | Aaron Sanchez | 14 |
| 10th | Trevor Bauer | 13 |
| 11th | Marco Gonzales | 13 |
| 12th | Zach Eflin | 13 |
| 13th | Daniel Norris | 13 |
| 14th | Marcus Stroman | 13 |
| 15th | Jordan Zimmermann | 13 |
| 16th | Raisel Iglesias | 12 |
| 17th | Ivan Nova | 12 |
| 18th | Matthew Boyd | 12 |
| 19th | Joe Musgrove | 12 |
| 20th | Rick Porcello | 12 |
| 21st | Jeff Samardzija | 12 |
| 22nd | Trevor Richards | 12 |
| 23rd | Jhoulys Chacin | 12 |
| 24th | Tyler Mahle | 12 |
| 25th | Adam Conley | 11 |
| 26th | Matt Strahm | 11 |
| 27th | Lance Lynn | 11 |
| 28th | Julio Teheran | 11 |
| 29th | Ariel Jurado | 11 |
| 30th | Yusei Kikuchi | 11 |
2018 MLB Pitching Losses Leaders
| L Rank | Team | L |
|---|
| 1st | James Shields | 16 |
| 2nd | Dylan Bundy | 16 |
| 3rd | Tanner Roark | 15 |
| 4th | Andrew Cashner | 15 |
| 5th | Alex Cobb | 15 |
| 6th | Jason Hammel | 14 |
| 7th | Nick Pivetta | 14 |
| 8th | Felix Hernandez | 14 |
| 9th | Marco Estrada | 14 |
| 10th | Dylan Covey | 14 |
| 11th | Homer Bailey | 14 |
| 12th | Kyle Gibson | 13 |
| 13th | Lucas Giolito | 13 |
| 14th | Matthew Boyd | 13 |
| 15th | Andrew Suarez | 13 |
| 16th | Cole Hamels | 12 |
| 17th | Luis Castillo | 12 |
| 18th | Jose Urena | 12 |
| 19th | Vince Velasquez | 12 |
| 20th | Jakob Junis | 12 |
| 21st | Bartolo Colon | 12 |
| 22nd | Danny Duffy | 12 |
| 23rd | Francisco Liriano | 12 |
| 24th | Wei-Yin Chen | 12 |
| 25th | Michael Fulmer | 12 |
| 26th | Sal Romano | 11 |
| 27th | Dallas Keuchel | 11 |
| 28th | Zack Godley | 11 |
| 29th | Zack Greinke | 11 |
| 30th | Kyle Hendricks | 11 |
2017 MLB Pitching Losses Leaders
| L Rank | Team | L |
|---|
| 1st | Rick Porcello | 17 |
| 2nd | Tyler Chatwood | 15 |
| 3rd | Ricky Nolasco | 15 |
| 4th | Wade Miley | 15 |
| 5th | Matt Moore | 15 |
| 6th | Clayton Richard | 15 |
| 7th | Jeff Samardzija | 15 |
| 8th | Ivan Nova | 14 |
| 9th | Derek Holland | 14 |
| 10th | Bartolo Colon | 14 |
| 11th | Joe Biagini | 13 |
| 12th | Patrick Corbin | 13 |
| 13th | Jason Hammel | 13 |
| 14th | Julio Teheran | 13 |
| 15th | Mike Leake | 13 |
| 16th | Ian Kennedy | 13 |
| 17th | Mike Foltynewicz | 13 |
| 18th | Jordan Zimmermann | 13 |
| 19th | Miguel Gonzalez | 13 |
| 20th | Chris Archer | 12 |
| 21st | Ty Blach | 12 |
| 22nd | Kevin Gausman | 12 |
| 23rd | Mike Pelfrey | 12 |
| 24th | Gerrit Cole | 12 |
| 25th | Martin Perez | 12 |
| 26th | Yu Darvish | 12 |
| 27th | John Lackey | 12 |
| 28th | Masahiro Tanaka | 12 |
| 29th | Sonny Gray | 12 |
| 30th | Michael Fulmer | 12 |
2016 MLB Pitching Losses Leaders
| L Rank | Team | L |
|---|
| 1st | Chris Archer | 19 |
| 2nd | James Shields | 19 |
| 3rd | Jimmy Nelson | 16 |
| 4th | Robbie Ray | 15 |
| 5th | R.A. Dickey | 15 |
| 6th | Jerad Eickhoff | 14 |
| 7th | Ricky Nolasco | 14 |
| 8th | Patrick Corbin | 13 |
| 9th | Anibal Sanchez | 13 |
| 10th | Tom Koehler | 13 |
| 11th | Doug Fister | 13 |
| 12th | Jaime Garcia | 13 |
| 13th | Francisco Liriano | 13 |
| 14th | Wade Miley | 13 |
| 15th | Matt Shoemaker | 13 |
| 16th | Matt Wisler | 13 |
| 17th | Hisashi Iwakuma | 12 |
| 18th | Matt Moore | 12 |
| 19th | Michael Pineda | 12 |
| 20th | Jose Quintana | 12 |
| 21st | Yordano Ventura | 12 |
| 22nd | Drew Pomeranz | 12 |
| 23rd | Jered Weaver | 12 |
| 24th | Kevin Gausman | 12 |
| 25th | Mike Leake | 12 |
| 26th | CC Sabathia | 12 |
| 27th | Drew Smyly | 12 |
| 28th | Ubaldo Jimenez | 12 |
| 29th | Tyler Duffey | 12 |
| 30th | Dallas Keuchel | 12 |
2015 MLB Pitching Losses Leaders
| L Rank | Team | L |
|---|
| 1st | Shelby Miller | 17 |
| 2nd | Corey Kluber | 16 |
| 3rd | Andrew Cashner | 16 |
| 4th | Jesse Chavez | 15 |
| 5th | John Danks | 15 |
| 6th | Ian Kennedy | 15 |
| 7th | Aaron Harang | 15 |
| 8th | Rick Porcello | 15 |
| 9th | Tom Koehler | 14 |
| 10th | Matt Garza | 14 |
| 11th | Kyle Lohse | 13 |
| 12th | Chris Archer | 13 |
| 13th | Bartolo Colon | 13 |
| 14th | Johnny Cueto | 13 |
| 15th | Jeff Samardzija | 13 |
| 16th | Anthony DeSclafani | 13 |
| 17th | Jimmy Nelson | 13 |
| 18th | Kyle Kendrick | 13 |
| 19th | Tyson Ross | 12 |
| 20th | Max Scherzer | 12 |
| 21st | Jerome Williams | 12 |
| 22nd | Jon Lester | 12 |
| 23rd | Garrett Richards | 12 |
| 24th | Alex Wood | 12 |
| 25th | Trevor Bauer | 12 |
| 26th | Alfredo Simon | 12 |
| 27th | Carlos Carrasco | 12 |
| 28th | Jeremy Hellickson | 12 |
| 29th | Miguel Gonzalez | 12 |
| 30th | Jered Weaver | 12 |
2014 MLB Pitching Losses Leaders
| L Rank | Team | L |
|---|
| 1st | A.J. Burnett | 18 |
| 2nd | Kevin Correia | 17 |
| 3rd | Eric Stults | 17 |
| 4th | Brandon McCarthy | 15 |
| 5th | Edwin Jackson | 15 |
| 6th | Nathan Eovaldi | 14 |
| 7th | Tyson Ross | 14 |
| 8th | Colby Lewis | 14 |
| 9th | R.A. Dickey | 13 |
| 10th | Ian Kennedy | 13 |
| 11th | Mike Leake | 13 |
| 12th | Jeff Samardzija | 13 |
| 13th | Julio Teheran | 13 |
| 14th | Drew Hutchison | 13 |
| 15th | Kyle Kendrick | 13 |
| 16th | Jake Peavy | 13 |
| 17th | Rick Porcello | 13 |
| 18th | Ryan Vogelsong | 13 |
| 19th | Bartolo Colon | 13 |
| 20th | Tim Hudson | 13 |
| 21st | Jake Odorizzi | 13 |
| 22nd | Travis Wood | 13 |
| 23rd | Brett Oberholtzer | 13 |
| 24th | David Price | 12 |
| 25th | Aaron Harang | 12 |
| 26th | Wade Miley | 12 |
| 27th | Hector Noesi | 12 |
| 28th | Trevor Cahill | 12 |
| 29th | Justin Verlander | 12 |
| 30th | Danny Duffy | 12 |
