Madison Keys vs Naomi Osaka in a battle of the young guns! | US Open 2018 Semifinal

23-year-old Madison Keys takes on 20-year-old Naomi Osaka in the youngest US Open semifinal in nearly a decade. No. 14 seed Keys comes into the match with a 4-0 win record over No. 20 seed Osaka, including a Round 3 win at the US Open 2016. A place in the final against Serena Williams awaits the winner, but will it be Keys or Osaka who prevails? Don't miss a moment of the US Open! Subscribe now! https://bit.ly/2Pdr81i