Second row Evans has recovered from a hip problem while Jones has overcome a calf niggle to make the subs bench.
In a game which wing Eli Walker will make his European Cup debut, Ospreys Director of Coaching, Scott Johnson commented: “The focus among the group has been excellent this week. It’s a big challenge that we face, but we know what we’ve got to do. There’s no margin for error on Sunday.
“We’ll know by kick-off time what we are playing for, if it’s a Heineken Cup place or an Amlin place, but one thing you can guarantee is that we’ll be giving it everything.
“Biarritz is always a difficult place to go, any French club is the same, particularly when we’re in a straight shoot-out for a qualification place. There’s a little bit of history between us after that magnificent quarter-final match a couple of years ago, and I’d expect another good match. They are a damn good team, but so can we be if we get our jobs right on the day.
“It’s important that we represent the region well, our fans will be looking to see that last weekend wasn’t a one-off. It was good to get some tries under our belt against difficult opponents that can be bloody tough to put away. We looked sharper, more clinical, but there’s plenty of room for improvement yet and no one is under any illusions that we can get anything in Biarritz if we under perform.
“Everyone will have to be on top of their game, play well, know their roles, and if we get that right, we’ll be hopeful of extending our European season into the knockout stages. I’m sure all our fans will be behind us on that score.”
Ospreys 15 Barry Davies 14 Tommy Bowe 13 Andrew Bishop 12 Ashley Beck 11 Eli Walker 10 Dan Biggar 9 Rhys Webb; 1 Paul James 2 Huw Bennett 3 Adam Jones 4 Ian Gough 5 Ian Evans 6 Tom Smith 7 Justin Tipuric (Capt) 8 Jonathan Thomas
Replacements: 16 Richard Hibbard 17 Ryan Bevington 18 Aaron Jarvis 19 Ryan Jones 20 Joe Bearman 21 Kahn Fotuali’i 22 Matthew Morgan 23 Shane Williams
