[1] Sivanantham made her Women's One Day International cricket debut for Sri Lanka in a 1997/8 match against The Netherlands, taking 1/16 from 8 overs, and making 10*.
[4] In January 2002, she recorded bowling figures of 5 wickets for 2 runs in a match against Pakistan; these are the best bowling figures for a Sri Lankan bowler in Women's ODIs.
[8] A few days later, Sivanantham captained the team in a Twenty20 match against the United States, making 31*.
[9] She also captained the team in the 2012 Americas T20 Championship in the Cayman Islands, a pre-qualifying tournament for the 2014 ICC Women's World Twenty20.
[11] Canada won their final group game against Japan, with Sivanantham scoring 32 from 41 balls.