Terence Crawford, boxing’s top pound-for-pound fighter, retires on top with 42-0 record

Crawford turned pro in 2008 and won titles in four weight classes.

Terence Crawford is the only male boxer to capture three unified division titles. Pic: Sarah Stier/Getty Images for Netflix

Terence Crawford, who claimed the title of best pound-for-pound boxer with a convincing victory over Canelo Alvarez in September, announced his retirement on Tuesday.

The 38-year-old Crawford is the only male boxer to capture three unified division titles, which he accomplished with that unanimous decision over Alvarez before 70,482 fans at Allegiant Stadium in Las Vegas.