Halep asked for multiple visits from her coach, Darren Cahill, while Andreescu did not request any chats with her coach, Sylvain Bruneau.
The US$14-million season-ending tournament splits the eight players into two groups - Andreescu, ranked fourth in the world, and No. 5 Halep are in the Purple Group.
"I try to work every single point and start from the beginning just trying to take one point at a time", Svitolina said.
After a slow start, Halep came back into the contest and a powerful forehand victor down the line clinched her break in the fifth game before the players held serve.
Despite the disappointment of an injury-plagued finish, Andreescu's breakout 2019 season - highlighted by a win over Serena Williams in the U.S. Open final - was overwhelmingly positive.
"This court is not great for me, for my game".
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In that light, our nation's special forces and intelligence operatives deserve the world's heartfelt thanks. At that moment, I couldn't care less about who occupied the Oval Office, we killed freakin' bin Laden .
Having qualified for the tournament just in nick of the time, the Ukrainian has now got herself one last chance to win a title this season. Winless Andreescu can't qualify for the semi-finals, while Wimbledon champion Halep will play Pliskova to decide the group's second spot. "I really can't complain".
"Everything what I just won was because I made a victor or because I was pushing her". I don't want that. Hopefully I can recover quick after this.
The defending champion became the first player through to the semi-finals after sweeping past an error-strewn Simona Halep to win 7-5, 6-3 in Shenzhen, China yesterday. "We'll see. If not, then I'm going to have a good preseason, good off-season, be ready for 2020".
Wasting a match point in the first match against Simona Halep, Andreescu was eager to score the victory today, kicking off the action with a break after a backhand error from Pliskova, hitting a service victor in game two to cement the lead and move 2-0 up. Elina started confidently, winning three games in a row, but then allowed her opponent to even the score.
While Elina Svitolina has yet to break her Grand Slam duck, the WTA Finals is fast becoming the event where she brings her best tennis. I was still playing very solid today, my defense was very good so I am very proud about that. Momentum shifts Halep and Svitolina, two of the finest movers in the game, have taken turns in beating each other in patches.