There were no bigger winners than Tennys Sandgren and Hyeon Chung at Melbourne Park on Monday, with the two causing back-to-back massive upsets on an enthralling day of tennis.
But a few savvy punters weren't far behind and are set to cash in big time if the magical runs continue.
Sandgren – now a $51 chance to win the men's title with TAB – was $1001 pre-tournament.
On January 19 one punter had a $50 wager at $501 for a collect of $25,050. At the time, Sandgren was yet to win a grand slam match in his career.
Meanwhile, Hyeon Chung was a $4.25 outsider before taking the court against six-time Australian Open champion Novak Djokovic.
