The Leamington Spa ace won the opening set 3-1 and the players shared the next four legs before Gulliver hit double five to seal victory.

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Withers then crashed over to seal Crusaders' first double over a Super League side, meaning Whitehead's late score for the Bulls was little more than consolation.

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But the fourth seed's serve became more erratic, making four double faults, and Nadal capitalised with two breaks to seal the first set.

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