Rajasthan Royals defeated Chennai Super Kings by eight wickets in the IPL Twenty20 match at Ahmedabad today. Set to score 157 runs for a win, Rajasthan achieved the target in 18.2 overs. Opener Ajinkya Rahane was the top-scorer with an unbeaten 76. Shane Watson was out for 73.Earlier, electing to bat after winning the toss, Chennai Super Kings made 156 for 4 in their twenty overs. Dwayne Bravo was the top scorer with an unbeaten 62 off 36 balls.Rajasthan Royals have won all their five matches so far. For the Chennai team, it is their first defeat in four games. In today's other IPL encounter, Royal Challengers Bengaluru will take on Mumbai Indians in Bengaluru.