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Sergio Wielzen's Huge World Championship Credentials

As decorated as he may be, there’s ONE belt he’s yet to claim.

Singapore | 18 May | LIVE and FREE on the ONE Super Apphttp://bit.ly/ONESuperApp | TV: Check local listings for global broadcast | Facebook: Prelims LIVE | Twitter: Prelims + 2 Main-Card bouts LIVE | Ticketshttp://bit.ly/oneunstoppable18