A parochial Australian crowd erupted into chants of "bulls---" after a controversial umpiring decision, but the unheralded John Millman overcame the setback to survive an epic five-set tussle and move into a career best third round at the Australian Open. 
In scenes rarely witnessed at Melbourne Park, the football-like crowd on the outside showcourt took exception to a contentious umpiring call and voiced their disapproval.
At 2-2 deuce in the fifth set, Millman appeared to be dominating a point when the racket dampener of his opponent Gilles Muller flung on to the surface on the outside showcourt.
The umpire called let, rattling the 95th-ranked Australian who then double faulted the next point, wasting a challenge out of frustration. The 26-year-old Queenslander, who had never been past the first round of his home grand slam, regained his composure to win the game and eventually the match, sending the small but animated crowd into raptures.
Millmanwon 4-6, 6-4, 6-2, 4-6, 7-5 in three hours and 38 minutes.
His previous best record at a major came at Wimbledon last year, shocking then world No. 19 Tommy Robredo in the first round before eventually succumbing to Marcos Baghdatis in a five-set thriller.
His win on Thursday earns him entry to a third-round clash against the winner of the Bernard Tomic-Simone Bolelli match.