Complex sentence: After winning the toss and electing to bowl first, Mumbai restricted Kolkata to 147 in 20 overs and chased down the target for the loss of six wickets with four balls to spare.
Split into simpler sentences: After winning the toss and electing to bowl first, Mumbai restricted Kolkata to 147 in their 20 overs. Mumbai chased down the target with the loss of six wickets and four balls to spare.