Venue: The O2 Arena, Greenwich, London, England (a historic boxing venue that has hosted major UK cards including Joshua, Haye-Bellew, and Whyte fights).
The full card begins in the afternoon/evening UK time, with ring walks for Riley vs. Masternak expected around 9:00–10:30 PM BST (approximately 4:00–5:30 PM ET / 1:00–2:30 PM PT), depending on the length of earlier bouts. The main event (Chisora vs. Wilder) follows. The event streams live on DAZN (PPV in some territories).
Injury Report: No reported injuries for either fighter. Masternak retired from his December 2023 title fight against Chris Billam-Smith due to a rib injury but has fought three times since (all wins) with no lingering issues noted in recent coverage. Both appear fully cleared and training normally as of late March 2026.
Fighter Matchups (Tale of the Tape):
Viddal Riley (“The Rilest”) – London, UK | Age 28 | 13-0 (7 KOs) | Orthodox | 6’1″ (185 cm) | Reach 76.5″ (194 cm)
Mateusz Masternak (“Master”) – Wroclaw, Poland | Age 38 | 50-6 (33 KOs) | Orthodox | 6’1″ (186 cm) | Reach 76″ (193 cm)
Riley is the much younger, undefeated home fighter stepping up in class. Masternak is the battle-tested veteran and current EBU champion bringing significant experience and power (66% KO rate).
Recent Form:
Riley: Strong momentum with back-to-back high-level domestic wins. Last fight: April 25/26, 2025 – UD 12 vs. Cheavon Clarke (10-1) to win the British cruiserweight title (Clarke suffered a cut from an accidental clash). Before that: Dec 14, 2024 – TKO 2 vs. Dan Garber; Mar 31, 2024 – UD 10 vs. Mikael Lawal (17-1, retained English title); Sep 30, 2023 – UD 10 vs. Nathan Quarless (won English title). Riley is 5-0 in his last five with three stoppages and looks sharp and confident.
Masternak: Three straight wins since his only recent loss. Last fight: Oct 4, 2025 – KO 7 vs. Joel Tambwe Djeko (19-3-1) to claim the vacant EBU European title. Prior: Nov 16, 2024 – UD 10 vs. Floyd Masson (14-1, won Polish international title); Apr 2024 – Win vs. Jean Jacques Olivier. The veteran is riding a hot streak and proved he can still finish fights at 38.
Fight History Summary: Riley turned pro in 2018 and has built a perfect 13-0 record almost exclusively against UK-based opposition, collecting English and British titles. This is his first major international step-up and first fight against a top-10 level veteran.
Masternak has been pro since 2006 (56 fights total). He has challenged for world titles (lost to Billam-Smith for WBO) and holds multiple regional belts. His six losses have come against elite opposition, but he has 33 knockouts and is known for durability and late-career power.
No prior head-to-head; this is a fresh matchup.
FIGHT ODDS
Mateusz Masternak + 250
Viddal Riley – 400
Odds Courtesy of Sports Odds Direct as of Friday, April 3, 2026
