Striker Mandeep Singh scored a brilliant hat-trick to hand India a fighting 4-3 victory over lower-ranked Japan in a round robin match of the 26th Azlan Shah Cup hockey tournament, at Ipoh in Malaysia, today.The win kept India's challenge alive in the six-nation tournament, taking them to seven points from four matches.The win gave India a chance of making the second successive final in the Sultan Azlan Shah Cup after having finished runners-up behind Australia last year.