Frances Tiafoe defeated Mikhail Kukushkin of Kazakhstan, 6-1, 6-7 (3-7), 6-3, 6-2, on Tuesday in the Australian Open, his first Grand Slam match victory. "I know in the back of my head I have a Grand Slam win, which definitely takes a lot off of me, a big load off," said the No. 108-ranked Tiafoe, who turns 19 on Friday and is from Riverdale in Prince George's County. Later this week, Tiafoe will face Germany's Alexander Zverev, a 19-year-old ranked No. 24 in the world, in the second round. The two have never played each other on the pro tour, but Tiafoe expects a "fun match to watch" against his good friend from the junior circuit. "I'm pretty happy with my progression so far and hopefully can keep it going," Tiafoe said.