The young American tennis star has burst onto the scene in women's singles tennis in the last few years.
This year, they entered the tournament with a combined total of seven wins on tour throughout the season.
"She was moving really well", Ostapenko said.
At the moment, Ostapenko is ranked fifth in the WTA rankings, while Stephens is ranked 12th. She fell to Alison Riske in the first round. The American interestingly changed her usual tactics and tried to put her opponent out of position, preferring sharp angles to raw power from the baseline. This is the American's first WTA Premier Mandatory tennis title.
While we are on the subject of on-court interactions - Kamau Murray and Stephens make a great team - Stephens' form after her win may have raised some eyebrows but snapping her losing steak has shown she is back to her previous motivation.
The Latvian's serve continued to let her down, draining any confidence she may have left, and the forehand collapsed.
Notably, Stephens has made six finals in her career - and won the title every time. She is good off both wings, and now under the tutelage of David Taylor and by her own admission, she seems to be maturing on court. "You have to commit to the short balls. I was sometimes missing shots I was normally making this week".
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Davenport and Jennifer Capriati, looked more confident and tactically smarter. But I think it's because of you guys. "But I just feel fortunate that I was able to do that here in South Florida with all my friends and family watching".
At last, Stephens' serve began to kick in, she held to love, and worked another break chance. She might have been pushed to five tie-breaks this tournament but she has won each won and is yet to drop a set.
The No. 13-seeded Stephens won with defense, repeatedly extending rallies until Ostapenko would make a mistake.
Ostapenko came into the encounter having not lost a set but the Latvian's efforts were washed away in a sea of errors and an inability to puncture the Stephens defence. With that epic-but hardly classic-first set out of the way, Sloane would lose just one more game. "You're too passive on the forehand" said her Kamau Murray.
It was, all things considered, an intriguing final and a significant first showdown between two women who could go on to dominate through the coming decade. Just breathe. Secure the bag.
But here were two fresh stars who, despite winning Majors a year ago, were playing in their first Premier Mandatory final and playing one another for the first time.
Stephens, who needed some time after that US Open win six months ago to rest, process, get healthy and reload, certainly wasn't ready in Australia two months ago.