Behind the Greatest Photo of Muhammad Ali Ever Taken

So much of great photography is being in the right spot at the right moment. That was what it was like for Sports Illustrated photographer Neil Leifer when he shot perhaps the greatest sports photo of the century, capturing Muhammad Ali, who died on Friday at age 74.

“I was obviously in the right seat, but what matters is I didn’t miss,” he later said. Leifer had taken that ringside spot in Lewiston, Maine, on May 25, 1965, as 23-year-old heavyweight boxing champion Ali squared off against 34-year-old Sonny Liston, the man he’d snatched the title from the previous year. One minute and 44 seconds into the first round, Ali’s right fist connected with Liston’s chin and Liston went down. Leifer snapped the photo of the champ towering over his vanquished opponent and taunting him, “Get up and fight, sucker!”

Power­ful overhead lights and thick clouds of cigar smoke had turned the ring into the perfect studio, and Leifer took full advantage. His perfectly composed image captures Ali radiating the strength and poetic brashness that made him the nation’s most beloved and reviled athlete, at a moment when sports, politics and popular culture were being squarely battered in the tumult of the ’60s.

For much more on Muhammad Ali, see TIME’s ALI: The Greatest, a 112-page, fully illustrated commemorative edition. Available at retailers and at AMAZON.COM