KOLKATA, India (AP) — Indian Premier League leaders the Kolkata Knight Riders became the first playoff team after beating Mumbai Indians by 18 runs in a rain-shortened match on Saturday.

A nearly two-hour delay reduced the game to 16 overs per side, and Kolkata put up 157-7 then restricted Mumbai to 139-8.

Kolkata confirmed a spot in the final four. Five other teams, including defending champions the Chennai Super Kings, were in realistic contention for the remaining three spots. Five-time champion Mumbai was already eliminated from contention.

Put into bat, Kolkata’s in-form openers Phil Salt and Sunil Narine were out cheaply at 10-2. Jasprit Bumrah bowled Narine for a golden duck.

Skipper Shreyas Iyer was out for 7, and Venkatesh Iyer stepped up to resurrect the innings.

Venkatesh Iyer scored 42 off 21 balls, including six fours and two sixes. He shared 37 with Nitish Rana, who scored 33, and was out caught off wrist spinner Piyush Chawla.