In Hockey, defending champion Indian Oil takes on Bharat Petroleum while Air India plays Namdhari-XI, today in the semifinals of the Indian Oil SERVO Surjit Hockey Tournament in Jalandhar.Namdhari-XI had defeated ONGC 4-1 yesterday, while Air India beat Punjab & Sind Bank 2-1 to enter into the semis.Earlier, Indian Oil had defeated Punjab Police while Bharat Petroleum beat RCF Kapurthala to enter the semifinals.The tournament is being played at Olympian Surjit Hockey Stadium.