Batting at number four, Williamson had scored 317 runs in 11 innings for SRH last season, and Bayliss said New Zealand skipper needs more time to be fit
Chris Silverwood, who joined the England set-up as bowling coach in January 2018, replaces Trevor Bayliss who stepped down from the role at the end of the Ashes.
Steve Smith was impersonating former opening batsman Chris Rogers by donning glasses, and not mocking England spinner Jack Leach, after Australia retained the Ashes at Old Trafford, coach Justin Langer said.
Brad Haddin joins former England coach Trevor Bayliss, who was appointed SunRisers Hyderabad head coach last month, replacing fellow Australian Tom Moody