Canelo Álvarez vs. Daniel Jacobs was a professional boxing match contested on 4 May 2019, for the WBA, WBC, IBF and The Ring Middleweight championship.

[1] After moving up to Super middleweight in December 2018 to defeat Rocky Fielding, Canelo Álvarez announced in January 2019 he would return to the Middleweight division to face Daniel Jacobs in an attempt to unify his WBA, WBC and The Ring belts with Jacobs' IBF title.

[6] Jacobs came in 3.7lb over a contracted rehydration limit of 170lbs the morning of the bout (a stipulation demanded by Álvarez’s team), costing him nearly $1,000,000 of his $10,000,000 guaranteed purse.

Canelo was the busier fighter in the early rounds, Jacobs using his rangy left jab to keep Álvarez at bay however the Mexican's elusive upper-body movement prevented him from scoring frequently.

Instead he would move up two weight divisions to face WBO Light heavyweight champion Sergey Kovalev.