The Ospreys have made a late change to their starting line-up for their Boxing Day derby at Parc y Scarlets.
Winger Jeff Hassler has withdrawn from the starting XV due to illness, Eli Walker taking his place in the team. Walker will wear the number 11 shirt, with Hanno Dirksen, now pulling on the 14 jersey that Hassler had been due to wear.
Olly Cracknell comes onto the bench wearing number 21, meaning a six-two split among the replacements, with Martin Roberts and Sam Davies now in 22 and 23 respectively.
Ospreys (revised): 15 Dan Evans, 14 Hanno Dirksen, 13 Ben John, 12 Josh Matavesi, 11 Eli Walker, 10 Dan Biggar, 9 Tom Habberfield, 8 James King, 7 Justin Tipuric, 6 Dan Lydiate, 5 Alun Wyn Jones (c), 4 Lloyd Ashley, 3 Dmitri Arhip, 2 Scott Baldwin, 1 Paul James.
Replacements: 16 Sam Parry, 17 Nicky Smith, 18 Aaron Jarvis, 19 Rory Thornton, 20 Dan Baker, 21 Olly Cracknell, 22 Martin Roberts, 23 Sam Davies.
Date: Saturday, December 26
Venue: Parc y Scarlets
Kick-off: 14:05 GMT
Referee: Nigel Owens (Wales)
Assistant Referees: Leighton Hodges (Wales), Wayne Davies (Wales)
TMO: Jon Mason (Wales)