Mark McCall has warned Saracens need to be at their best if they are to contain the threat of Wasps on Sunday.

Sarries have won their last two matches against Leicester Tigers and Worcester Warriors, bringing to an end a seven-match losing streak in all competitions.

Their 46-31 victory over Worcester on December 30 left McCall with mixed feelings, as he thought elements of sloppiness crept into their play despite the win.

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And the director of rugby is determined not to replicate this against a Wasps side notorious for their electric back line as Sarries look to tighten their grip on second spot in the Premiership.

He said: “We’ve done okay recently, the [Champions Cup] performance in Clermont was good, the Leicester performance was an outstanding one and we were for the most part disappointed some of what we produced against Worcester.

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“We know we can’t be like that this weekend, Wasps’ attack is very dangerous and we’ve got to defend the way we did in the Clermont and Leicester away games.”

He added that England duo Billy Vunipola and Maro Itoje could both feature in the match after lengthy spells on the sidelines through injury.

“Vunipola and Itoje took part in training and we’ll decide later in the week as to their involvement in the game on Sunday,” he said.

“Jaw injuries can vary from 4-12 weeks really, Maro’s surgeon expected it to be at the lower end of that and four weeks was last Sunday so this recovery time is about right.

“He’s been able to train and to run from a week after it happened so he’s been able to play a full part in what we’ve been doing since then.”

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