Former South African player Makhaya Ntini has said that players like Jacques Kallis should focus on one format of the game, if they are keen on breaking Sachin Tendulkar's record.
According to Sport24, he said that if Kallis wants to play in the 2015 Cricket World Cup, then he should focus exclusively on the 50-over game.
He also said that for the time being, he does not know what their role was.
Ntini was the first ethnically black player to play for the South African team.
A fast bowler, he used to bowl from wide of the crease with brisk, although not express, pace.
