Not yet! Serena Williams pulls off amazing comeback win over Kontaveit to advance at US Open

The plan to "evolve away from tennis" has been delayed for a few more days, as Serena Williams fought back to topple World No.2 Anett Kontaveit and advance to the third round at the US Open.

The 23-time Grand Slam champion's fighting spirit was on full display in her 7-6(4) 2-6 6-2 win over the second seed, as she dug deep to rally back from a disappointing second set.

Williams looked focused as she traded groundstrokes with Kontaveit from the baseline, with the American being more aggressive with her approaches to the net. This led to her eventually taking the first set, after both ladies refused to yield and force a tiebreak.

The second set saw Kontaveit dominate, as the Estonian reminded fans why she was ranked as the second best player in the world. Despite the support of the crowd, Williams was unable to power past her confident foe and soon saw herself entering a decider with an opponent who had considerably more match experience this year.

Nonetheless, it was the American who broke first, and after being immediately broken back, Williams secured another break and never looked back. With the crowd fully on her side, the 40-year old displayed shades of her younger self as she dominated play from the baseline, before ending points at the net. A splendid backhand winner down the line sealed the match for Williams, who advanced after an exhausting two hours and 27 minutes.

Up next for the WTA legend is Australian Ajla Tomljanovic, who has never faced Williams on the WTA circuit.