Donald 'deserves' number one ranking

Luke Donald tells BBC Sport's Iain Carter those who criticise his world number one ranking because he has yet to win a maiden major title are wrong.

Donald says has played better than anyone else over the last two years and feels there are no limits to what he can achieve in 2012.

Donald is currently bidding to become the first player to finish top of the prize money lists for both the US and European Tours.

Read Iain's blog on Luke Donald and the rankings.