Yorkshire Phoenix face a tricky problem in who to leave out against Durham Dynamos at Headingley Carnegie tomorrow to accommodate England captain Michael Vaughan.

The comfortable victory over Derbyshire Phantoms on Thursday has renewed Yorkshire's hopes of qualifying for the semi-finals of the Friends Provident Trophy but to stand any chance of doing so they must beat Durham and then overcome Northamptonshire Steelbacks at Headingley on June 13.

Everyone in the team performed well at Derby but someone will have to make way for Vaughan, who wants to polish up his batting ahead of the third Test against the West Indies, which begins at Old Trafford on Thursday.

It is a tough call for captain Darren Gough and director of cricket Martyn Moxon, who said that Vaughan's return was one of two issues which would be tackled shortly before the start of the match.

"First of all we need to see what the pitch is like and we also need to keep an eye on the weather forecast," said Moxon.

"We have again put left-arm spinner, David Wainwright, in the squad, and whether he comes in as the main spinner or we ask Jacques Rudolph and Younus Khan to share the job will depend upon the conditions.

"If David plays, someone else is going to have to stand down in addition to who drops out for Michael Vaughan."

It is a fair bet that Wainwright will once again be 12th man and that Andrew Gale will be omitted for Vaughan, despite the left-hander's unbeaten 40 against Durham and his consistent batting in the competition this season.

In four innings to date, Gale has made 151 runs for twice out at an average of 75.5.

Richard Pyrah is another under threat but he has taken seven wickets at only 22.85 runs apiece with his medium pacers and he has become one of Yorkshire's outstanding fielders in one-day cricket.

Another poser for Gough will be where Vaughan should bat. Craig White and Rudolph put on 122 for the first wicket at Derby and Anthony McGrath is well settled at number three.

Yorkshire Phoenix from: White, Vaughan, Rudolph, Younus Khan, Gale, Pyrah, Bresnan, Guy, Gough, Gillespie, Kruis, Wainwright.