Mikaela Mayer, right, lands a right to Lizbeth Crespo in a match held in Las Vegas on June 15, 2019. (AP file photo)

LAS VEGAS — Mikaela Mayer made history Tuesday evening, but more importantly, she earned the win.

Mayer improved her professional record to 13-0 with five knockouts as she outboxed Helen Joseph over 10 rounds, earning a unanimous decision at the MGM Grand “bubble.”

Two judges scored Mayer winning 100-90 in points with the third at 99-91.

This matchup marked the first time the main event of a Top Rank on ESPN show was a women’s matchup.

Mayer had been out of the ring since Oct. 26, after she and Joseph were scheduled to fight June 9. A positive coronavirus test by Mayer delayed the fight, but she scraped off the ring rust and put forth a dominating performance over the two-time world title challenger, who now has a record of 17-5-2 with 10 KOs.