Defending Champions Kolkata Knight Riders beat Mumbai Indians by 7 wickets in the Indian Premier League (IPL) opener at the Eden Gardens yesterday. Brief Scores: Mumbai Indians: 168/3 in 20 overs (Rohit Sharma 98 not out, Corey Anderson 55 not out; Morne Morkel 4-18) Kolkata Knight Riders: 170/3 out in 18.3 overs (Gautam Gambhir 57, Manish Pandey 40, Suryakumar Yadav 46 not out; Harbhajan Singh 1-38).