WBO women's welterweight champion Sandy Ryan is set for a huge test in September.
She will be making the trip to face Mikaela Mayer in New York for her latest title defence in what will be just her tenth professional fight.
After losing to Natasha Jonas for the IBF 147lb title in January, Mayer will be hoping her second attempt at beating a British fighter for a world championship will be a successful one.
Here's everything you need to know ahead of Ryan vs. Mayer.
The Ryan vs. Mayer ringwalks are scheduled for 12 a.m. ET / 5 a.m. UK with the event set to begin at 10:30 p.m. ET / 3:30 a.m. UK. These timings are subject to change.
Fans in the U.S. can stream the fight on ESPN+ (click here for more information), while a UK broadcaster has not been confirmed at the time of writing.
The Theater at Madison Square Garden in New York will host this fight.
Ticket information for this fight has not been confirmed at the time of writing.