World champion Rudisha opens 'big year' in Doha




JOHANNESBURG (AP) -- Olympic favorite David Rudisha will begin his "big year" at the Diamond League season-opener in Doha next month and expects he'll need three more races to be ready for the London Games.

The 23-year-old Kenyan says he's in good shape ahead of his first Olympics, where he can claim the one major title missing from an already-impressive record.

Rudisha says he's "missing the big one" and wants to return from the British capital with a gold medal to go with the silver his father won in the 4x400 relay at the 1968 Mexico City Games.

The younger Rudisha also says this year is "the right time" for him to also run in the 4x400 at the Olympics.

Rudisha followed up his two record-breaking runs in 2010 by winning the world title last year in Daegu, South Korea, giving him world and African titles.