PHOTOS: US Open Day 4

Photo credit Denis Shapovalov (USA TODAY Images)

By WFAN Sports Radio 101.9 FM/66AM New York

The best shots from the fourth day of the 2019 US Open.

Photo credit Denis Shapovalov (USA TODAY Images)

PHOTOS: US Open Day 4 1

Photo credit Petra Kvitova (USA TODAY Images)

PHOTOS: US Open Day 4 2

Photo credit John Isner (USA TODAY Images)

PHOTOS: US Open Day 4 3

Photo credit Coco Gauff (USA TODAY Images)

PHOTOS: US Open Day 4 4

Photo credit Nick Kyrgios (USA TODAY Images)

PHOTOS: US Open Day 4 5

Photo credit Simona Halep (USA TODAY Images)

PHOTOS: US Open Day 4 6

Photo credit Stan Wawrinka (USA TODAY Images)

PHOTOS: US Open Day 4 7

Photo credit Naomi Osaka (USA TODAY Images)

PHOTOS: US Open Day 4 8

Photo credit Kobe Bryant and Colin Kaepernick watch Naomi Osaka play. (USA TODAY Images)

PHOTOS: US Open Day 4 9

Photo credit Naomi Osaka (USA TODAY Images)

PHOTOS: US Open Day 4 10

Photo credit Taylor Townsend (USA TODAY Images)

PHOTOS: US Open Day 4 11

Photo credit Taylor Townsend (USA TODAY Images)

PHOTOS: US Open Day 4 12

Photo credit Marin Cilic (USA TODAY Images)

PHOTOS: US Open Day 4 13

Photo credit Danielle Collins (USA TODAY Images)

PHOTOS: US Open Day 4 14