Radwanska didn't drop a set all week and that pattern continued in the final, as the No.2-seeded Pole broke five times - and was never broken herself - to race past Kovinic in just 58 minutes, 6-1, 6-2.
"I saw her here and she played really great tennis this week, so I didn't really expect to have an easy match or anything," Radwanska said of Kovinic. "But I was really solid from the beginning. I think I was just using the conditions a little bit better today, and maybe that's why the score was like that."
"She's Top 10, she's played a Grand Slam final, she's a huge player - I've watched a lot of her matches on TV but it's completely different when you step on the court and play against her," Kovinic said.
"She hits very flat, and I was a little too far behind the baseline, which gave her the chance to be more aggressive. She moved me around the court a lot today and just played a really good match."
And so, Radwanska not only collects her second WTA title of the year and the 16th of her career, she also qualifies for the BNP Paribas WTA Finals Singapore presented by SC Global (read more here).
"Coming to Asia I didn't really think I had any chance to go to Singapore, and it's actually been a very good couple of weeks for me," Radwanska said. "Winning Tokyo gave me some chances to go there, and then every match started to matter after that. And I knew if I won here, I would make it there.
"But the pressure didn't feel too big. I could really play my best tennis in Tianjin this week."
The former World No.2 will be making her fifth straight appearance at the WTA's crown jewel event.
Kovinic doesn't leave empty-handed, though. Coming in she was the only Montenegrin ever to reach a WTA quarterfinal, doing it six times over the last few years, and this week she shattered her national record, becoming the first Montenegrin to reach a WTA final before running into a red-hot Radwanska.
"I wanted to play better today, but everything was so tough - I was very tired after a long week and Aga was playing really well," Kovinic said in her post-match press conference. "But it's been a great week for me, of course. I have a few weeks left before my season is over and I hope to keep going."
It was the pair's second WTA doubles title together - they won the Stanford title in the summer too.
? WTA (@WTA) October 18, 2015