And Lucie Safarova was hungry for an upset, playing the tennis of her life to make her first major final.

It was their ninth career meeting, and Williams had a big advantage – she was 8-0 against the Czech.

And it looked like that pattern would continue on Court Philippe Chatrier on a sunny Saturday afternoon.

Williams stormed out to a 6-3, 4-1 lead in little over an hour, with points for a 6-3, 5-1 lead.

Safarova, who hadn’t dropped a set in six matches en route to the final, looked very down and out…

But there’s a reason she took out players like Maria Sharapova and Ana Ivanovic earlier in the fortnight.

The No.13 seed came alive down 6-3, 4-1, 40-15, clawing back and taking the second set in a tie-break.

Williams was on the defense – Safarova not only took that middle set, she raced out to 2-0 in the third.

But the No.1 seed turned it around from there, reeling off six games in a row to sneak out the victory.

Williams edged Safarova out in front of an enthralled Court Philippe Chatrier crowd, 6-3, 6-7(2), 6-2.

She had her third straight Slam, her 20th overall Slam and that coveted Australian-French Open double.

She also improved to 9-0 against Safarova, though four of those nine meetings have been three-setters.

Williams will now have a massive 4,421-point lead over Petra Kvitova at the top of the WTA Rankings.

She will also extend her lead over Maria Sharapova and Simona Halep on the Road To Singapore leaderboard.