"It just got worse and worse and worse, and then I just couldn't move". Here I am in the final, so it's something that's.a really special moment for me, and I think definitely for the future it's something that I can be proud of.
Svitolina was unable to consolidate the break in a marathon 13-minute second game but hit back immediately against Bertens' erratic serve, becoming the first ever Ukrainian to qualify for the decider.
From there Stephens found her footing and seventh-seeded Pliskova began to derail. I was, like, I'm going to lose 0-0. I know that when I am fresh and fully motivated it is better than when I start again a week or two earlier. "A lot of the top girls who have up-and-down results, a win here and then they lose there, we all kind of deal with the same thing", she told reporters.
Stephens leads Svitolina 2-1 in their head-to-head stats, the American enjoying a straight-sets win over the Ukrainian in the last meeting at the Rogers Cup in August.
Pliskova was only a point away from a 3-0 lead in the second set.
"I think the four of us, in our groups, we all played really well", Stephens said of the semi-finalists.
Svitolina claimed the biggest title of her career with a tough 3-6, 6-2, 6-2 victory over Sloane Stephens in two hours and 23 minutes.
"There were nerves early on but I was just trying to fight for every ball and I think that made the difference in the end". Her defensive prowess wore down Bertens, who blasted 41 winners but made 63 unforced errors.
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Merkel's party managed an unimpressive win, narrowly salvaging a majority for its regional governing coalition with the Greens. Mrs Merkel's conservative CDU party now rules along with the centre-left Social Democratic Party (SDP).
"There's still lots of work ahead", said sixth-seeded Svitolina.
"It is awesome. I am very pleased with my performance this week", Svitolina added. It was her fourth title of 2018 following Brisbane, Dubai, and Rome.
Svitolina qualified for a second consecutive WTA Finals this year only because her Dutch opponent on Saturday failed to reach the Moscow semifinals.
Bertens saved one set point on her serve in the 10th game of the first set, but couldn't repeat that trick in the 12th game, double-faulting at 15-40 to surrender the set.
In the middle of the first set tennis players have exchanged breaks, then take your submission.
The Ukrainian nearly missed qualifying for the WTA Finals after some early-round losses in the lead-up to Singapore.
Sloane Stephens of United States of America reacts during the singles final against Ukraine's Elina Svitolina.