KKR have the same ledger at 4-5 but move up to fourth spot, buoyed by a fine display from Player of the Match Sunil Narine.
The West Indian produced an excellent innings-changing spell of 20-1 from his four overs, as Mumbai’s momentum was thwarted, eventually reaching 155-6.
KKR chased down the total with 29 balls to spare and seven wickets in hand, led by Rahul Tripathi’s 74no from 42 balls.
Opener Venkatesh Iyer scored 53 from 30 balls, falling to Jasprit Bumrah who took three wickets for Mumbai.
“We’ve fought well in the past really well, hopefully all of us can pull together,” Rohit said.
“The points table is always there in the back of the mind. Important to know where you stand. I am OK.”
Knight Riders skipper Eoin Morgan was delighted with his side’s performance, particularly his bowling attack which restricted Mumbai’s guns such as Suryakumar Yadav (5 from 10), Ishan Kishan (14 from 13), Kieron Pollard (21 from 15) and Krunal Pandya (12 from 9).
Only openers Quinton de Kock (55 from 42) and Rohit (33 from 30) genuinely got off the leash, combining for a 78-run first-wicket stand in 56 balls.
“To hold such a strong Mumbai team, and chase it down in the manner we did gives us confidence,” Morgan said.
“Sunil and Varun (Chakravarthy) are formidable bowlers. Sunil has been integral in winning KKR championships in the past. Varun is a fresh guy.
“The first two games in this second phase has been a great template for us to play. There’s only one way for us to go in the points table, and that’s up.”