Gennady Golovkin vs. Daniel Jacobs, billed as Middleweight Madness, was a professional boxing fight contested for the unified WBA (Super), WBC, IBF, IBO championship.

[3] The date discussed initially was 10 December, which Golovkin's team had on hold for Madison Square Garden.

The date was originally set by HBO for Álvarez after he defeated Liam Smith, but Canelo confirmed he would not be fighting again until 2017 after fracturing his right thumb.

[4][5][6][7] Loeffler told the LA Times on 18 October that although the negotiations were still active, the fight would not take place on December 10.

[13] On December 17, terms were finally agreed, and it was announced that the fight would take place at Madison Square Garden in New York City on March 18, 2017, broadcast exclusively on HBO PPV.

[14] Golovkin tweeted the announcement whilst Jacobs uploaded a short video on social media.

[19] Jacobs declined to compete for the IBF title by skipping a fight-day weight check.

Kellerman, Jim Lampley and Roy Jones Jr. estimated that Jacobs came to fight Golovkin weighing around 180 pounds, therefore being a legitimate light heavyweight that night with a considerably increased punching power.

Golovkin's ring control, constant forward pressure and effective jab lead to a 115-112, 115-112, 114-113 unanimous decision victory, ending his 23 fight knockout streak which dated back to November 2008.

In the fourth round, Golovkin dropped Jacobs with a short right hand along the ropes for a flash knockdown.