The upcoming cricket World Cup will be the most open till date keeping in mind the format, feels South African legend Jacques Kallis. "It will be a World Cup that's going to be more open than it's ever been," Kallis told reporters at Eden Gardens ahead of Kolkata Knight Riders' practice session. The 43-year old former all-rounder is the head coach of the two-time Indian Premier League (IPL) champions.

"The sides that play well throughout the tournament and in key moments are going to be the sides to beat," Kallis said. The tournament -- starting May 30 in England and Wales -- will revert back to the format used in 1992 World Cup when each team playing one another once in a round robin format and the top four teams going on to play in the semi-finals.