Viddal Riley vs Mateusz Masternak: Date, Fight Time & Undercard Details

Updated 31 March, 2026, 18:00 BST

Viddal Riley (13-0, 7 KOs) challenges Mateusz Masternak (50-6, 33 KOs) on Saturday 4 April at the O2 Arena, London, for the EBU European cruiserweight title and an IBF world title eliminator spot, on the undercard of Chisora Vs Wilder, dubbed the “100”.

Viddal Riley, 28, makes his debut under MF PRO against a two-time European champion who has shared the ring with Tony Bellew and Chris Billam-Smith.

Ringwalks for the co-main event are expected at approximately 8:00 PM BST on DAZN PPV. Check the latest cruiserweight rankings to see where both fighters sit heading into fight week.

Between them, Riley and Masternak have boxed 443 professional rounds across 69 fights. The winner out of the two will likely be ordered to face Chris Billam-Smith the vacant belt after the IBF stripped Jai Opetaia of the world title on 19 March for competing in an unsanctioned Zuffa Boxing bout.

When is Viddal Riley vs Mateusz Masternak?

Riley vs Masternak ringwalks are anticipated around 9:00 PM BST as the co-main event, depending on the length of the earlier bouts. The main event between Chisora and Wilder should follow at approximately 10:00 PM BST. The undercard fights are expected as early as 2:00 PM BST on DAZN.

Date: Saturday, 4 April, 2026
Venue: O2 Arena, London, England
UK broadcast start: Approximately 2:00 PM BST on DAZN PPV
Main event ringwalks: Approximately 10:00 PM BST
PPV price: £24.99 on DAZN, or included with DAZN Ultimate subscription
Belts at stake: EBU European Cruiserweight Title / IBF World Title Eliminator
Promotion: MF PRO / MF & DAZN

How to Watch Viddal Riley vs Mateusz Masternak in the UK

The fight is live on DAZN PPV in the UK, priced at £24.99 as a one-off purchase. DAZN Ultimate subscribers get the event included at no extra cost as part of their monthly package, which runs at £44.99 per month and covers all PPV events throughout the year.

If you’re considering the subscription route, upcoming events on the platform may make it better value than buying individual cards. There is no free streaming or YouTube options for this card.

Viddal Riley vs Mateusz Masternak Odds: Who Is Favourite to Win?

Riley is the clear favourite at approximately 7/25 with most bookmakers, while Masternak is available at around 5/2 for the upset.

The odds reflect Riley’s unbeaten record, youth advantage, and upward momentum, but they may underestimate Masternak’s pedigree. He has operated at world level for nearly a decade, including a competitive decision loss to Yuniel Dorticos in the WBSS and a WBO world title challenge against Billam-Smith where he was ahead on the cards before retiring with a rib injury in the eighth round.

At 38, the questions are about his legs and stamina over 12 rounds rather than his skill set. Riley has never fought anyone close to Masternak’s level, and the British title win over Cheavon Clarke, while earned clearly on points, didn’t produce the kind of dominant display that justifies odds this short.

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Viddal Riley vs Mateusz Masternak Tale of the Tape

Viddal Riley: Nationality: British Age: 28 Height: 6’1″ (185cm) Reach: 76″ (194cm) Total fights: 13 Record: 13-0-0 (7 KOs)

Mateusz Masternak: Nationality: Polish Age: 38 Height: 6’1″ (186cm) Reach: 76″ (193cm) Total fights: 56 Record: 50-6-0 (33 KOs)

Viddal Riley Recent Form

W UD 12 vs Cheavon Clarke – British Cruiserweight Title
W TKO 2 vs Dan Garber
W UD 10 vs Mikael Lawal – English Cruiserweight Title defence
W UD 10 vs Nathan Quarless – Vacant English Cruiserweight Title
W KO 1 vs Jone Volau

Mateusz Masternak Recent Form

W KO 7 vs Joel Tambwe Djeko – Vacant EBU European Cruiserweight Title
L RTD 8 vs Chris Billam-Smith – WBO World Cruiserweight Title
W UD 12 vs Jason Whateley L UD 12 vs Yuniel Dorticos – WBSS Quarter-Final
W TKO 6 vs Youri Kayembre Kalenga – WBO European Title

The Split Decision’s Prediction

Riley needs to use his jab, keep Masternak at range, and avoid getting dragged into close and messy exchanges where Masternak’s experience and power become dangerous. Masternak’s best chance is early aggression, testing Riley’s chin before the younger man finds his rhythm and inevitably pulls away on the scorecards in the second half.

The age gap and Riley’s conditioning should be the difference in what could be a tough first six rounds. Masternak will make it competitive early, but Riley’s work rate and fresher legs will tell in the championship rounds.

Split Decision backs Riley to win by unanimous decision, with the contest becoming comfortable by rounds 9-12 after a tight opening half. If Riley gets greedy and tries to stop Masternak, the Pole has the experience to make him pay.