Watch Gennady Golovkin vs. Daniel Jacobs (2017) Online

After years of fighting any middleweight who was willing, while stockpiling impressive streaks of knockouts and title defenses in the process, unified champion Gennady Golovkin enters a dangerous challenge against Daniel Jacobs. The pair of hard-punching middleweights will headline Saturday’s HBO PPV card (9 p.m. ET) from Madison Square Garden in New York, where Golovkin, a native of Kazakhstan, has built a boisterous following thanks to four knockout victories inside “The World’s Most Famous Arena.” Golovkin will look for his 24th consecutive knockout against Jacobs, a secondary titlist from the same Brownsville section of Brooklyn, New York, that has produced so many great fighters. Jacobs, who returned to boxing in 2012 after beating a rare form of bone cancer, is 10-0 with 10 KOs since coming back. GGG will also aim for his 18th straight title defense, which would move him two shy of Bernard Hopkins’ middleweight record.