Ivan Lendl is optimistic that Andy Murray's US Open win will be followed by more major tennis titles.
Murray beat Novak Djokovic in five sets to become the first British male winner of a Grand Slam event since Fred Perry in 1936.
Lendl, who became Murray's coach at the start of this year, says hopefully, they're not anywhere near where the Scot can get.
This year Murray made the semi-finals in Australia, quarter-finals at Roland Garros, final at Wimbledon and won gold at the London Olympics.
Lendl, like Murray, lost his first four Grand Slam finals - before going on to win eight majors - and the naturalised American says one of his most important matches of the year was his loss to Djokovic in Australia, because that was war just like New York.
He says that gave Murray the belief that he can hang with these guys and it showed him what it would take to win.
