The Warriors side features the in-form Josh Drauniniu who scored a hat-trick last time out and has recently signed a new deal with the club.
The home side do make two changes to their bench with the experienced internationals Euean Murray and Chris Jones returning.
Last time the two sides played Worcester headed back home with a resounding 85-3 win but the Aviva Premiership team are taking this game just as seriously as any other game.
Worcester: 15 Errie Claassens, 14 Nikki Walker, 13 Jon Clarke, 12 Andy Short, 11 Josh Drauniniu, 10 Danny Gray, 9 Jonny Arr, 8 Blair Cowan, 7 Jake Abbott, 6 Sam Betty, 5 Craig Gillies, 4 Dean Schofield, 3 Rob O'Donnell, 2 Ollie Hayes, 1 Matt Mullan.
Replacements: 16 Aleki Lutui, 17 James Currie, 18 Euan Murray, 19 Chris Jones, 20 Neil Best, 21 Ollie Frost, 22 Max Stelling, 23 Ben Howard.
Bizkaia Gernika RT: 15 Fred Montagut, 14 Parrish Garcia Parrado, 13 Ale Torres Suar, 12 Wins Wilson, 11 Santi Salas, 10 Deccie Cusack, 9 Igor Mirones, 8 Afa Amosa, 7 David Hernandez, 6 Lopa Lopategi, 5 Goyo Zabaloy, 4 Tato Duran, 3 Fer Iraizoz, 2 Unai Lasa, 1 Mike Dias.
Replacements: 16 Nico Bilbao, 17 Urru Urrutia, 18 Pingui Monje, 19 Jon Magunazelaia, 20 Oscar Astarloa, 21 Ando Oreja, 22 Toto Mazzochi, 23 Iñi Olaeta.
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The entire All Blacks apparel line has been updated for 2013/14. Check out the New Zealand All Blacks polo.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Gilbert Blitz 8S rugby cleat is a great cleat at a great price of $69.99. Get a new pair of cleats today.
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
$29.99
The All Blacks Performance t-shirt is black with hints of blue from the training jersey. Very Cool.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.
