Erik Isaac Morales Elvir is a Mexican former professional boxer who competed from 1993 to 2012. He is the first Mexico-born boxer in history to win world championships in four weight classes, ranging from super bantamweight to light welterweight.

Morales defeated fifteen world champions during the course of his career, and is famous for his trilogies with fellow Mexican legend Marco Antonio Barrera, as well as Manny Pacquiao. ESPN ranked Morales at number 49 on their list of the 50 greatest boxers of all time.

Morales was inducted into the International Boxing Hall of Fame in June 2018.

Marco Tovar.............................Fight #04

Juan Luis Torres.....................Fight #17

Alberto Martínez.....................Fight #18

Rudy Bradley............................Fight #21

Acero Sanchez.........................Fight #23

Pedro Javier Torres................Fight #24

Concepcion Velasquez..........Fight #26

Daniel Zaragoza.......................Fight #27

John Lowey..............................Fight #28

José Luis Bueno......................Fight #30

Junior Jones............................Fight #31

Ángel Chacón..........................Fight #32

Juan Carlos Ramírez..............Fight #33

Reynante Jamili......................Fight #34

Wayne McCullough................Fight #35

Marco Antonio Barrera #1.....Fight #36

Mike Juárez..............................Fight #37

Kevin Kelley..............................Fight #38

Guty Espadas Jr.#1................Fight #40

In-Jin Chi...................................Fight #41

Marco Antonio Barrera #2....Fight #42

Paulie Ayala..............................Fight #43

Eddie Croft...............................Fight #44

Fernando Velárdez.................Fight #45

Guty Espadas Jr. #2...............Fight #46

Jesús Chávez...........................Fight #47

Carlos Hernández...................Fight #48

Marco Antonio Barrera #3....Fight #49

Manny Pacquiao #1................Fight #50

Zahir Raheem...........................Fight #51

Manny Pacquiao #2...............Fight #52

Manny Pacquiao #3...............Fight #53

David Díaz................................Fight #54

José Alfaro...............................Fight #55

Willie Limond...........................Fight #56

Marcos Maidana......................Fight #58

Pablo César Cano...................Fight #59

Danny García #1......................Fight #60

Danny García #2......................Fight #61