The 45-year-old Williams, who returned to the tour last month after 16 months away from competition, is eliminated by 11th-seeded Karolina Muchova, 6-3, 2-6, 6-1. Williams is the oldest singles

Venus Williams, at age 45, returned to the US Open and took No. 11 seed Karolina Muchova to three sets before losing in the first round.

Venus Williams made an impressive return to tennis this year and managed to make her way to the US Open, but she came up short in the first round.