Sri Lanka won the toss and elected to bat against India in the final clash of the cricket tri-series at Dambulla. Today's match promises to be a high- voltage battle for the title. The third team, New Zealand, is out of the equation after India handed it a 105-run thrashing in the last league match. Indian Skipper Mahendra Singh Dhoni has admitted that barring Sehwag all the batsmen are struggling on the tricky pitches in Sri Lanka and mastering the conditions would be the biggest challenge.