Shelton tips Tiafoe at US Open to move one win from ending 23-year drought

<ul><li><p>23-year-old defeats Tiafoe 4-6, 6-3, 6-3, 7-5</p></li><li><p>Shelton is first Black US men’s finalist since Ashe</p></li><li><p>American will face top seed Zverev for title</p></li></ul><p>For 23 yea