Excitement finally arrived on the big show courts at the US Open during Day 5.

On Arthur Ashe Stadium on Friday night, Coco Gauff and Novak Djokovic both needed final sets to get their victories. Gauff was down 3-6, 2-3 0-15 but didn't lose another game against Mertens 3-6, 6-3, 6-0, while Djokovic was never seriously threatened but needed five sets anyway to beat Laslo Djere 4-6, 4-6, 6-1, 6-1, 6-3.

Earlier in the day, American men did well, with Taylor Fritz, Ben Shelton, Tommy Paul, and Frances Tiafoe all earning victories.

Elsewhere on the women's side, Sorana Cirstea, age 33, beat top-4 seed Elena Rybakina in a high quality one 6-3, 6-7, 6-4, and Caroline Wozniacki continued her improbable run 4-6, 6-3, 6-1 against Jen Brady.

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