NICK Kyrgios became involved in a heated exchange with opponent Dudi Sela after clashing with the Israeli’s fans during a first-round win at the ATP event in Acapulco. On a dramatic day for Australian tennis following Bernard Tomic’s controversial mid-match retirement in Mexico , Kyrgios came from a set down to beat world No.75 Sela 3-6 6-3 6-3 on Wednesday.