INDIAN WELLS, CA: World number two Aryna Sabalenka got her WTA Finals campaign off to a winning start with a hard-fought victory over Karolina Muchova, while Mirra Andreeva eased past Elina Svitolina as Group 2 action got underway on Monday. Making her sixth consecutive appearance at the season-ending tournament, Sabalenka had to work hard to overcome a determined Muchova 7-6(2) 7-5, with the Czech making her debut at the event after a breakthrough season that included titles in Doha and Bad H
