Miguel Cotto has been fighting for more than 16 years and has won titles in four different divisions -- junior welterweight, welterweight, junior middleweight and middleweight.
Cotto (41-5, 33 KOs), who turned 37 in October, will fight for the last time on Saturday, when he defends his junior middleweight belt against Sadam Ali at the legendary Madison Square Garden in New York City.
Take a look at how Cotto has changed his body over the past few years.