Usman Khawaja hit an impressive century ahead of the three-Test series against Sri Lanka [ Images ], as Australia [ Images ] took the upper hand in their warm-up match against Sri Lanka Board XI's in Colombo on Friday.

The Pakistan-born batsman scored 101 before retiring, as the tourists amassed 311-5 in their first innings in reply to a the Sri Lanka Board XI's 258 at stumps on the penultimate day of the three-day game.

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Opener Phillip Hughes (76) and skipper Michael Clarke [ Images ] (61 not out) also gained valuable batting practice ahead of the series, starting in Galle next Wednesday.

The other two matches will be played in Pallekele (September 8-12) and Colombo (Sept 16-20).

Australia, resuming at 26 for no loss, denied the hosts success for more than a session as Khawaja and Hughes put on 153 runs for the opening wicket.

Hughes fell in the second session when he was bowled by part-time spinner Tharanga Paranavitana [ Images ] after hitting 10 fours.

Khawaja, who has played just one Test, then added 53 for the second wicket with Michael Hussey [ Images ] (28). He hit two sixes and eight fours before retiring in the last session.

Off-spinner Dilruwan Perera bagged two wickets for the hosts.

Brief scores:

Sri Lanka Board XI (1st innings): 258 (D. Chandimal 59, T. Paranavitana 49, T. Perera 36, L. Thirimanne 32, B. Rajapaksa 21; T. Copeland 5-47, R. Harris 2-39, M. Beer 2-42, N. Lyon 1-71).

Australia (1st innings): 311-5 (Usman Khawaja 101 retd, P. Hughes 76, M. Clarke 61 not out, M. Hussey 28; D. Perera 2-115).