England launched their World Cup defence with a 28-10 victory over the USA - but captain Phil Vickery could miss next Friday's showdown with South Africa.

Vickery faces an anxious wait to discover whether or not he will be cited for a blatant first-half trip on Eagles centre Paul Emerick.

The incident went unnoticed and unpunished by referee Jonathan Kaplan, but video replays at Stade Felix-Bollaert suggested Vickery's action was premeditated.