Bernard Hopkins won a unanimous points decision over Roy Jones Jr in their long-delayed rematch on Saturday, emphatically avenging his loss against Jones nearly 17 years ago.

The 45-year-old Hopkins (51-5-1, 32 KOs) dominated nearly every round of their light-heavyweight bout, winning for the fifth time in his six fights since 2005. Hopkins’s dominance survived a punch to the back of his head from Jones late in the sixth round. Hopkins, who was seeing spots throughout the later rounds, collapsed in his dressing room afterwards.

Both fighters were taken to a hospital for evaluation, although both left the Mandalay Bay Events Center without assistance.

“It was definitely worth it, and it was sweet revenge,” Hopkins said. “It was really rough in there. He’s a good fighter, and he tried to rough me up. I tried to tough it out, but I was seeing spots from the sixth round on.”

Hopkins settled an old score against the 41-year-old Jones (54-7), who beat him by decision in May 1993. Jones has now lost six of his last 11 bouts, falling precipitously from his pedestal as arguably the most dominant fighter of the 90s.

“He’s a defensive fighter, and he fought a smart fight,” Jones said. “I had to chase him the whole time. The referee didn’t warn him about [head butts], but every time I did something, I got a warning.”