For the First Time, 3 Moms, Including Serena Williams, Are in the US Open Quarterfinals

Williams, ranked eighth in women's tennis going into the US Open and turning 39 this month, has already won the most US Open singles matches in history. Three-year-old Olympia is there to watch her mom go for her 24th grand slam title to tie Margaret Court's overall record.

"I just have a totally new respect for moms," Williams said, according to NBC Sports. "I would never have thought I would be playing as a mom." She continued on to say that the "plus" is that one day her daughter can look back and know she was in attendance watching.