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MELBOURNE, Australia — A postmillennial through and through, Stefanos Tsitsipas sounded as excited about doubling his YouTube channel’s followers to more than 30,000 within a few hours — “Oh, my God. Really?!” — as he was about becoming the youngest Grand Slam semifinalist since 2007.
Ah, to be 20, emerging as possibly the Next Big Thing in tennis and getting the opportunity to promote your travel vlogs.
“Guys,” he urged folks watching the Australian Open on Tuesday in person or on TV, “if you haven’t subscribed, please subscribe.