LONDON, Jan 10 (Reuters) - Liam Rosenior ‌enjoyed a 5-1 win at Charlton Athletic in his first match in charge of Chelsea but ‌Saturday's FA Cup thrashing of a side struggling in the second tier of English football is ‌unlikely to tell him much about the bigger challenges ahead.

Rosenior, peering through a freezing mist that descended on The Valley, had the luxury of bringing on some of the world's most talented players to finish Charlton off.