Developer has a landbank of 4 million sq. ft. for ultra-luxury and affordable luxury projects
Chung was pushed hard by Italian qualifier Gianluigi Quinzi before winning 1-4 4-1 4-2 3-4(6) 4-3(3) in the first match to go past two hours at the inaugural event showcasing the world's best players aged 21 and under plus a batch of new rules.
Rublev, at 37th the highest-ranked player in the tournament, looked in trouble against Canadian teenager Denis Shapovalov in the evening session when he needed treatment on blisters.
But the rugged 20-year-old edged home in a deciding set tiebreak, winning 4-1 3-4(8) 4-3(2) 0-4 4-3(3) to take runners-up spot in Group A in another match that went past two hours.
Another Russian, Daniil Medvedev, fared better as the world number 65 beat American Jared Donaldson 3-4(3) 4-2 4-3(1) 4-0 for his second victory in Group B.
He was left sweating on hopes of a victory by Croatia's Borna Coric against Russian Karen Khachanov later on Thursday to guarantee a place in Friday's semifinals.
Chung offered a new twist to the debate about shot-clock, one of several innovations being tested including short sets played to four games and no advantage points.
The 21-year old is a big fan of the scoreboard ticking down for the 25-second rule between points - saying it meant he knew exactly how long he had to clean his distinctive white-framed spectacles.
In the past he has incurred the wrath of the chair umpire by going over time, but avoided that fate on Thursday in a match that lasted two hours and six minutes.
"I like shot clock, because sometimes I get a warning because I have to clean my glasses," said Chung, who has worn prescription sports glasses throughout his career and only took up tennis to improve his eyesight.
"I get the warnings all the time in long matches. So I like the shot clock."
All eight group matches before Chung's afternoon clash with Quinzi had been completed in less than two hours - averaging one hour 26 minutes as the ATP experiments with speeding up play.
Developer has a landbank of 4 million sq. ft. for ultra-luxury and affordable luxury projects
The result will put more focus on the political future of Trudeau, who has become increasingly unpopular after almost nine years in office
Egypt plays a key role as gateway to Africa
India received $2.45 million earlier this year for winning the men's T20 World Cup, which handed out a total of $11.25 million
Dynamic duo making waves in the UAE golf community with support for EGF Order of Merit events while balancing competition and social engagement
Hidden Disabilities Sunflower programme provides a discreet way for passengers with conditions like autism, chronic pain, or anxiety to signal to staff that they may require additional assistance or compassion
This comes after Kerala Bharatiya Janata Party Chief K Surendran accused the Kerala government of presenting inflated relief expenditures to the High Court
Rohit's side begin a busy schedule with the opening match against Bangladesh starting on Thursday