Railways and BPCL have entered the semi-finals of the 65th All-India Obaidullah Khan Gold Cup Hockey tournament. In a quarter-final match at Bhopal on Sunday, IOC drubbed Railways 4-1, riding on skipper Deepak Thakur's brace. In another last-eight fixture, played at the city's Aish Bagh stadium Sunday evening, BPCL overcame Namdhari XI 3-1 to complete the semi-final line-up. Earlier, Air India and ONGC had made it to the semis with resounding victories.