London - Hallam Amos's 21st birthday present from coach Warren Gatland is a place in the starting line-up for the crunch Rugby World Cup Pool A clash with hosts England at Twickenham on Saturday.
Amos replaces the experienced Alex Cuthbert, who drops to the replacements bench after a series of disappointing performances, in a starting XV patched together after injuries cost Gatland several key players over the past few weeks.
There is no place for experienced scrum-half Mike Phillips -- who was called up when first choice Rhys Webb was ruled out of the tournament before it got underway.
England and Wales -- who both still have two-time champions Australia to play in their Pool of Death -- won their opening matches against Fiji and Uruguay respectively.
Liam Williams; George North, Scott Williams, Jamie Roberts, Hallam Amos; Dan Biggar, Gareth Davies; Taulupe Faletau, Sam Warburton (capt), Dan Lydiate; Alun Wyn Jones, Bradley Davies; Tomas Francis, Scott Baldwin, Gethin Jenkins
Replacements: Ken Owens, Aaron Jarvis, Samson Lee, Luke Charteris, Justin Tipuric, Lloyd Williams, Rhys Priestland, Alex Cuthbert.