SOMERSET have named an unchanged 13-man squad for tomorrow's "must win" Royal London One-Day Cup match against Surrey.

After starting the season with six straight wins, Somerset have lost their last three games – all in the One-Day Cup – to leave their qualification for the knockout stages in doubt.

Hampshire were seven-wicket winners at the Cooper Associates County Ground on Sunday afternoon, ensuring that they top the South Group standings and progress directly to the semi-finals.

Middlesex are second in the table, with Somerset third but level on eight points with Gloucestershire and Sussex.

It is, therefore, imperative that Somerset beat Surrey in Taunton tomorrow, in order to stay ahead of Gloucestershire (who travel to Essex) and Sussex (who host Glamorgan).

A win could also take Somerset above Middlesex, should they fail to win their final group game at Kent – with second place earning a home quarter-final and third an away quarter-final.

Surrey have struggled in this season's competition, with one win and six defeats from seven games.

The last meeting between the sides in this competition went the way of Somerset, with Johann Myburgh scoring 75no as the visitors chased down 130 to win by eight wickets at the Kia Oval last May.

Somerset head coach Jason Kerr named the following squad for the Surrey match:

Tom Abell (c), Azhar Ali, Tom Banton, George Bartlett, Dom Bess, Josh Davey, Lewis Gregory, Tim Groenewald, James Hildreth, Craig Overton, Jamie Overton, Peter Trego, Roelof van der Merwe.

The squad remains unchanged from the Hampshire defeat, with Dom Bess and Tim Groenewald pushing to be included in the team after not being selected on Sunday.

Kerr commented: "This is now a must win game for us.

"We know exactly what we have to do and I’m sure that the players will work hard and bounce back.

"Surrey have got some very capable batsmen and it only takes two of them to have a day like Azhar Ali and Peter Trego did against Essex, so lets hope that doesn’t happen.

"The advantage of the situation that we are now in is that we know what we have to do.

"Tom Abell and I have reflected on the Hampshire result and we will pick the best 11 that we can to win a game of cricket."

Play begins at 1pm tomorrow – making this Somerset's second match under the new County Ground floodlights – with gates open at 11am.