It's fight day in Riyadh. Some of the biggest names in the sport have returned to Saudi Arabia for an epic fight card headlined by an undisputed light heavyweight title rematch. Artur Beterbiev and Dmitry Bivol are hoping to leave no doubt in their second meeting in four months.

Here are live updates from throughout Saturday's seven-fight card headlined by Artur Beterbiev and Dmitry Bivol's undisputed title rematch.

Bivol-Beterbiev 2 promises to be a must-watch event with the light heavyweight title up for grabs. Here's the live updates, results and highlights.