The step up from Premiership Rugby to the England squad is taken with varying degrees of success.
Some, like Maro Itoje and Owen Farrell, take to test rugby like ducks to water.
Others, like Luke Cowan-Dickie or George Furbank, need a little bit of time to find their feet before they begin to look at home.
But for a number of players, the gulf between the Premiership and international rugby is just too much and they fail to replicate the form that earned themselves a spot in the England squad in the first place.
Let’s take a look at the group of players renowned for being top class in the Premiership, but not quite up to scratch when given the chance to play for England.
1. Hugh Vyvyan
The Newcastle and Saracens legend, who made 245 Premiership appearances, won a deserved first, but only England cap against Canada in the Investec Challenge match in 2004 and scored a try as captain. A true Premiership legend who never got a proper shot at international rugby.
DID YOU KNOW: Vyvyan is youngest of seven brothers.