Ex-CSK batter Suresh Raina, in an apparent dig at RCB, DC and PBKS, said 2-3 teams who partied haven't won IPL yet. Raina was referring to after-match parties that used to happen in earlier IPL seasons. "Chennai never partied. That's why they have been...most successful...If you party late into the night, how will you play in the morning?" he added.