Leeds Rhinos face an anxious wait to discover if Danny McGuire will miss the Challenge Cup final against Warrington Wolves after he sustained a knee injury in last night's 68-24 win over Widnes Vikings.

The injury which forced the hugely influential McGuire to go off in the 69th minute took the shine off the Rhinos' 12-try Stobart Super League drubbing.

Leeds have only one more league game - away to Catalan Dragons next Saturday - before taking on the Wolves at Wembley on August 25 and McGuire is a key part of their bid to lift the Cup for the first time since 1999.

Rhinos coach Brian McDermott said: "It is too early to tell how bad it is.

"It could be just a bang or it could be a big one - a twist and maybe ligament damage so it is concerning.

"We will know more when we can get it scanned at the start of next week and we can make a decision after that.

"My heart goes out to him if it is ligaments but we hope it is just sore.

"We will leave it until the 11th hour because of what he means to us."

McGuire helped create three tries in the first half but failed to cross the line himself, leaving him one try short of the outright Super League record he jointly holds with his former team-mate Keith Senior.

McDermott had decided against risking Jamie Peacock, Jamie Jones-Buchanan and Rob Burrow, who were all carrying minor injuries, with the cup final in mind.