Jannik Sinner wins Citi Open, becomes youngest ATP 500 champion

Italy's Jannik Sinner, on Monday, won the Citi Open in Washington after beating Mackenzie McDonald 7-5, 4-6, 7-5 in the final. The 19-year-old became the first teenager to win an ATP 500 event since the category was created in 2009. Sinner won his second ATP title in the ongoing season and third overall. He dropped only one set throughout the tournament.