Ulster coach Mark McCall has availed of all the Ireland internationals at his disposal for tomorrow evening's Celtic League clash in Llanelli.

Andrew Trimble, Isaac Boss, Simon Best and Paddy Wallace - all of whom were involved in Ireland's record win over England - have been named in Ulster's starting line-up for the match at Stradey Park.

Neil Best will miss the trip to Wales having picked up a thigh injury during Ireland training on Monday while hooker Rory Best was not released by the Irish team management.

The team also includes the four Ulster players featured in the High Performance Select Group announced by the IRFU yesterday with Bryan Young, Tommy Bowe, Stephen Ferris and Roger Wilson also starting.

With league leaders Leinster not in action this weekend, Ulster can go top with a positive result and with a number of Llanelli's big guns not released by the Welsh union will travel confident of taking the points.

"If we are serious about retaining our title then we have got to win this match," McCall said earlier this week. "We need to get points on the board, to get some momentum into our season, to get on a roll and to put pressure on the teams around us."

Meanwhile, Connacht captain Andrew Farley has failed a late fitness test and will be replaced by Michael Swift for the Celtic League clash with Border Reivers at the Sportsground tonight.

The hooker had been suffering with a shoulder injury. Swift's place on the bench will be taken by Ryan Strudwick. 

Chris Keane has been called on to the left wing after Daniel Riordan failed to recover from a hip injury. Ted Robinson will replace Keane on the bench.

Ulster  (v Llanelli): Bryn Cunningham; Tommy Bowe, Paul Steinmetz, Paddy Wallace, Andrew Trimble; David Humphreys, Isaac Boss; Bryan Young, Paul Shields, Simon Best; Justin Harrison (capt), Tim Barker; Stephen Ferris, Kieron Dawson, Roger Wilson. Replacements: Stuart Philpott, Justin Fitzpatrick, Ryan Caldwell, Sam Harding, Kieran Campbell, Kevin Maggs, Paul McKenzie

Connacht(v Borders): David Slemen; Darren Yapp, John Hearty, Mark McHugh (C), Conor McPhillips; Paul Warwick, Chris Keane; Brett Wilkinson, Adrian Flavin, Stephen Knoop; David Gannon, Michael Swift; John Muldoon, Ray Ofisa, Colm Rigney. Replacements:Conor Muldoon, Ray Hogan, Ryan Strudwick, Matt Lacey, Ted Robinson, Peter Durcan, Gavin Williams.