Jacques Kallis steps down as Kolkata Knight Riders head coach

South African all-rounder Jacques Kallis has stepped down as the head coach of the Indian Premier League outfit Kolkata Knight Riders. "After nine fantastic years with KKR since 2011, as a player, mentor and Head Coach, it's time to explore new opportunities...I would to like to thank the owners, management and fellow players for many happy memories," Kallis wrote.