The final weekend of March offers a busy slate of boxing matchups, headlined by a pair of high-stakes rematches and the pro debut of a British Olympian. Here’s a look at the key fights and what to expect:

British Olympian Pat Brown is set to make his professional debut at Planet Ice Altrincham, on the outskirts of his hometown of Manchester, against Argentina’s Federico Javier Grandone (7-4-2, 3 KOs). Originally slated to face Czech fighter Vladimir Reznicek, Brown now faces Grandone, who has lost his last four outings. The undercard features an intriguing lightweight battle between Cameron Vuong (7-0, 3 KOs) and Jordan Flynn (11-0-1, 1 KO) for the vacant WBO European title, plus Reece Farnhill (11-0, 4 KOs) defending his English super middleweight belt against Mark Dickinson (7-1, 2 KOs). The event streams on DAZN.

Unbeaten interim WBC lightweight champion William Zepeda (32-0, 27 KOs) meets former super featherweight titleholder Tevin Farmer (33-7-1, 8 KOs) for a second time at Poliforum Benito Juárez in Cancun. Their first encounter, which took place last November, ended with a narrow split-decision win for Zepeda. While Farmer looks to exact revenge, Zepeda aims to solidify his standing at 135 pounds. The co-main event features a minimumweight title defense for Puerto Rico’s Oscar Collazo (11-0, 8 KOs) against Mexico’s Edwin Cano (13-2-1, 4 KOs).

Two-weight champion Mikaela Mayer (20-2, 5 KOs) defends her WBO welterweight belt in a return bout with Britain’s Sandy Ryan (7-2-1, 3 KOs) at the Bleaulive Theater in Las Vegas. Mayer captured the vacant strap by majority decision in their first meeting last September; Ryan is determined to turn the tables this time. The co-feature sees Brian Norman Jr. (26-0, 20 KOs) put his own WBO welterweight title on the line against Puerto Rico’s Derrieck Cuevas (27-1-1, 19 KOs). The prelims include rising super lightweight Emiliano Vargas (12-0, 10 KOs) against Giovannie Gonzalez (20-7-2, 15 KOs). Mayer vs. Ryan 2 streams on ESPN+.

Image Credit: DAZN