Rampant Caroline Wozniacki credits aggression for her recent success as she strolls past Simona Halep at WTA Finals

The 27-year-old stunned Halep 6-0, 6-2 in just 63 minutes in Singapore to storm into the last four of the year-end tournament for the loss of just four games.

Wozniacki, a renowned counter-puncher, said she has enjoyed playing a more aggressive game in the round-robin format.

“Even if you lose the first match, you still have nothing to lose,” she told reporters. “It’s just a nice cushion to have. I think that kind of motivates me to start off strong and just go for it.

She added: “I just ran a lot of balls down and I played aggressive and I mixed up the pace. Everything I wanted to do was going my way.”

“I think this court is great for the all-round player, who can play both aggressive and defence,” she said. “I just have been feeling good and am playing at a high level.”

It was a bitterly disappointing evening for Halep, who was impressive in her opening victory over Caroline Garcia.