Defending champion Clijsters, 21, last played in early October when she retired in the second set of a match against Russia's Elena Bovina.

BBC: SPORT | Tennis | Clijsters marks comeback with win

Russia's Maria Kirilenko beat eighth-seeded compatriot Elena Bovina 6-3 6-1.

BBC: SPORT | Tennis | Clijsters eases into third round

In the remaining first-round matches, seventh seed Elena Bovina of Russia beat Jana Nejedly of Canada while eighth seed Meilen Tu fought back to defeat Brie Rippner 2-6 7-6 6-1.

BBC: Farina Elia into quarters