Breaking News: Rennae Stubbs outlines the ‘biggest issue’ which Jessica Pegula must change to win a Grand Slam….see more

A re-match of their Cincinnati final three weeks ago, Pegula had visibly improved elements of her game Sabalenka capitalised on in the mid-west.

Losing 7-5, 7-5, Pegula played her part in what was a thrilling US Open final.

The 30-year-old is uniquely relaxed on court, can hit huge groundstrokes, and remains one of the best problem-solvers on the WTA tour.

“Very small margins, but the biggest difference last night was the second serve.” Stubbs said in a US Open final review.

“So, Jessica Pegula, if she were to look at the winning percentages of second serves hit last night, Sabalenka was much higher in that category whereas Jessica Pegula was well under 30%.”

“If you are only winning 30% or less of your second serves that means you have to serve really well when it comes to first serves and that was the biggest issue last night.

“If there’s an area that she has to focus on it’s the serve, particularly the second serve.”