World number one Roger Federer has played down suggestions he could complete a clean sweep of Grand Slams in 2010.
Rod Laver is the only other tennis player to have achieved that feat back in 1969 but 16-time major winner Federer says he is relaxed about the possibility of a medals haul.
Tennis experts have argued it could be the Swiss superstar's last chance to make such a landmark because Rafael Nadal - his French Open nemesis - continues to be dogged by injury.
Federer, 28, said: "I won't put the entire calendar just around trying to win the calendar Grand Slam.
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It's something if it happens, it's great, but it's not something that's my number one goal.
Whatever happens, happens."