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 put up a fight. But she came up short Monday night after pushing No. 11 Karolína Muchová to a third set in the first round of the US Open.

Venus Williams has lost her first Grand Slam match in two years in three sets. The 45-year-old Williams was eliminated at the U.S.