This was the 3rd year Swiatek played at the WTA Finals and her first time to win it. It's a huge achievement because she overcame a pretty tricky event with horrible conditions which might have actually benefitted her style of play.
That's her words, and it really looked like that. She dominated everybody en route to the trophy losing only 20 games in 5 matches. On top of that, remember that Jessica Pegula, the player she beat in the final, was on a historic run herself dominating her opponents.
She still got dominated herself in the final 6-1 6-0 which is a crazy scoreline, and the most dominant in the WTA Finals history. For reference, the most dominant run Serena Williams ever had at the WTA Finals had her lose 32 games, which is the second-best mark in the history of the tournament.
I’m just really happy and super proud of myself. This week has been not easy, but I feel like it’s a kind of a reflection of the whole season. So I’m just happy that I could cope with everything well, and I kind of used my experience from all these years to perform well here.
The conditions that were kind of tricky also helped me to just, you know, focus on adjust my footwork, my shots … that kept me busy from thinking about all of that. So I think today was … just being narrow with your head, only thinking about the right stuff.
Obviously, the win was also significant because she returned to world number one and will finish the year as world number one. Pretty deserving result for the 22-year-old Polish player.