Melbourne, Feb 29 Australia suffered a jolt ahead of their cricket tri-series finals against India when they lost an inconsequential cricket tri-series game against Sri Lanka by a narrow margin of 13 runs here today.

Chasing Sri Lanka's competitive total of 221, the world champions got off to a flying start with Adam Gilchrist (83 off 50 balls) launching a blistering assault but completely lost the plot after his dismisal to be bundled out for 208 in 48.1 overs.

It was dramatic collapse by the Australians who were cruising comfortably at 113 for one at one stage before losing their remaining nine wickets for just 95 runs in a thrilling floodlit encounter at the MCG, allowing the islanders to salvage some pride.

The Sri Lankans, who have already been eliminated from the title race, fought back brilliantly after an early collapse to not only end the series on a winning note but also dent Australia's confidence a little bit ahead of the best-of-three finals against India beginning in Sydney on Sunday.

The two Aussie tailenders Brett Lee (37) and Nathan Bracken (14 not out) raised hopes of a stunning victory by putting on 35 runs for the last wicket leaving the Sri Lankans a little worried.

With the home team needing 14 runs in the last two overs, the Sri Lankan captain gambled by bringing in Sanath Jayasuriya and the wily veteran struck in his first ball by castling Lee. (Agencies)