On head to head count at the Kotla, Punjab and Delhi are locked on five victories each from 10 matches.
Buttler spoiled Mumbai's party last time around.
Last time around, it was Andre Russell's 13-ball 48 that denied RCB a victory.
DC had the last laugh in the previous encounter at the Wankhede.
The SRH lost four games against CSK last season that included the Qualifier 1 and the Final.
Will Buttler make amends for the Mankad dismissal earlier in the season?
Mumbai have a superior head-to-head record against Bangalore at the Wankhede.
Will the Capitals be able to conquer Hyderabad after Eden heroics?
As far as head to head at the Eden Gardens is concerned, CSK and KKR have won 4 matches each.
Will RCB be able to make amends for their poor show so far?