Romain Ntamack guided France to a thrilling 27-23 victory over Wales on Saturday to keep their hopes of Six Nations Grand Slam alive. France scored first-half tries through Anthony Bouthier and Paul Willemse, both converted by Ntamack, who also hit a penalty, punctuated by three from Dan Biggar. Dillon Lewis crossed for Wales early in the second period, but a converted Ntamack try and a further penalty saw France pull away for their first victory in Cardiff since 2010 despite Biggar's late converted try. lp/jc