Sexton comes in for Ulster
The inclusion of hooker Matt Sexton at the expense of Paul Shields is the only change coach Alan Solomons has made to Ulster's starting line-up for the visit of Cardiff to Ravenhill on Friday.
The Celtic League leaders will be all out to make it six wins in a row with the in-form Ryan Constable in the centre and Adam Larkin's steadying influence at fly-half.