Hyeon Chung wasn't on Twitter before he began his historic run at the Australian Open, becoming the first Korean player, male or female, to reach the semifinals of a Grand Slam.
Now, thanks to a breakout performance at Melbourne Park that has included a win over childhood idol and six-time champion Novak Djokovic, he's achieving the kind of instant celebrity in South Korea usually reserved for K-Pop stars.
Chung has only tweeted four times since setting up the account on Wednesday, but had more than 11,000 followers within 24 hours. And counting.
"From what I've heard, it's blowing up in Korea pretty big," Chung's coach, Neville Godwin, said Thursday at...