INDIAN WELLS (Reuters) - Serena Williams overcame a sluggish start to forge past Agnieszka Radwanska and move into the final of the BNP Paribas Open with a 6-4 7-6(1) victory on Friday.
The world number one was 4-2 down in the opening set and not moving freely in their semi-final at Indian Wells, before the American began to find her rhythm to claim four straight games and control of the battle.
Williams continued her run in the second set to win the opening three games before her Polish opponent fought back.
Radwanska displayed the kind of tennis that will see her rise to number two in the world rankings on Monday, rallying to win the next three games to get the set back on serve.
The Pole even had a chance to win just her second career set against Williams when she broke the American to lead 6-5, but could not close out on serve.
Williams then snuffed out any hopes Radwanska had of claiming a first victory against the American, winning seven straight points to take the tiebreaker 7-1 and improve to 10-0 in their head-to-head battles.