Suwini de Alwis bats left handedly and bowls slow left arm orthodox. Apart from Sri Lanka Women, she also plays for Marians Ladies.
Suwini de Alwis played her first ODI on 22nd March 2005 at Pretoria (Laudium Oval) and the opponent team was India Women. She faced 12 balls and scored 10 runs with the aid of 1 boundary. In this match, after 2 overs of the India Women innings were over, rain stopped play and there was no result of this match. Suwini also played against South Africa Women at Sydney (North Sydney Oval No. 2) on 14th March 2009. In this match, she was the No. 6 batsman and she gathered 24 runs in 45 balls inclusive of 2 fours. She bowled 8 overs, none of which were maiden, conceded 22 runs and failed to pick any wicket. South Africa Women won this match by 9 wickets with 129 deliveries remaining.
Suwini de Alwis has participated in 35 ODIs and in these has bowled 1517 deliveries in which 910 runs have been scored and 43 dismissals have taken place. Her bowling striker rate was 35.2, economy rate was 3.59 and bowling average was 21.16. She has scored 403 runs with 37 as her highest score. Her batting average was 13.43 and batting strike rate was 44.67. She took 10 catches and struck 1 sixer and 38 fours.