UFC 268 experts' picks: How can Covington, Zhang avenge their loses to Usman and Namajunas?

Covington gives his take on eye poke vs. Usman at UFC 245 (1:37)

Colby Covington contends that Kamaru Usman faked getting poked in the eye at UFC 245 in order to refresh himself in their main event matchup. (1:37)

NEW YORK -- Two of the most anticipated rematches in recent history will headline UFC 268 on Saturday at Madison Square Garden.

Welterweight champ Kamaru Usman will meet Colby Covington for the second time, nearly two years after defeating him via fifth-round TKO in late 2019 in what remains Usman's most competitive title defense. Covington has impatiently waited for this second crack and expects to take full advantage.

In the co-main event, strawweight champion Rose Namajunas, who's no stranger to stunning finishes in UFC title fights, faces Zhang Weili in a rematch of Namajunas' belt-winning victory in April.

Namajunas stunned Zhang with a head-kick knockout in the first round at UFC 261. In order for her to remain champion past Saturday, she will have to win a second time against Zhang, who has moved her training to Fight Ready MMA in Arizona.

Who has the edge in these second chapters? ESPN asked several experts for their breakdowns and predictions.

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Kamaru Usman vs. Colby Covington