The 21-year-old Coric came from two sets to one down to defeat the 20-year-old debutant Tiafoe 6-7(0), 6-1, 6-7(11), 6-1, 6-3 and finally subdue a remarkable fightback from the Americans, who had earlier levelled the tie 2-2 from two down.
Australia's number two Bernard Tomic will be absent from this week's Davis Cup quarter-finals but the United States will still have a fight on their hands in Brisbane due to the impressive form of Nick Kyrgios, US team captain Jim Courier said.
Serena Williams has never been one to take too much notice of convention.
Rafael Nadal's Australian Open quarter-final curse struck again on Tuesday, an injury forcing the top seed to retire in the fifth set against Croatia's Marin Cilic.
Djokovic, playing his first tournament for six months because of an elbow problem, dropped his opening two service games and although he battled back to break Monfils twice he wavered again as scrappy opener went his opponents' way.
Nadal no longer 'immovable' object in Paris.
American No 1 John Isner wants injured players to be compensated with first round prize money at Grand Slam to lower the number of early withdrawals.
One thing that has been consistent about Rafa Nadal's disappointing season so far has been his brutal honesty.
This is the first time that the towering Croatian has made the final of the Aus Open
Defending champion Roger Federer argued with an umpire but mostly let his racket do the talking as he beat Tomas Berdych for the ninth time running to reach the Australian Open semi-finals on Wednesday.
Bulgarian Grigor Dimitrov kept cool in the Rod Laver Arena maelstrom to knock home favourite Nick Kyrgios out of the Australian Open in a fourth-round thriller on Sunday.
Andy Murray has been the standout performer on clay for the past 12 months but world number one Novak Djokovic will be favourite to complete his set of grand slams at this year's French Open. Murray, according to the ATP Performance Zone stats, has won 85 percent of his matches on the red dust this year and last, more than any other player. Having been at 70 percent for the first 10 years of his career, the improvement demonstrates just how at home the Briton now feels on a surface he once treated with suspicion. His victory over Djokovic in Sunday's Italian Open final may have been aided by his opponent's energy levels being drained after a gruelling semi-final win over Kei Nishikori the night before. But it also was a timely statement of intent from the world number two, who recently split with coach Amelie Mauresmo.
Nick Kyrgios needs to improve his fitness to have a chance of winning Grand Slams, former world number one Jim Courier said on Wednesday.
List of US Open men's singles champions since the open era began in 1968:
Images from the action on Day 2 at the Australian Open.
'Whether or not I can reach a calendar slam, that's still a possibility. But I don't think about it right now. Right now I just try to enjoy this experience of winning the trophy that I had never won before'
Novak Djokovic spurred Serbia to a 3-0 win over neighbours Croatia in the first round of the Davis Cup on Saturday and they will be joined in the quarter-finals by an equally rampant France.
Summary of sports events and persons who made news on Wednesday
List of Australian Open men's singles champions since the event began in 1905 (Australian unless stated):
A round-up of results from Davis Cup matches played on Saturday and Sunday
IMAGES from the matches played at the PNB Paribas Open at Indian Wells on Sunday
List of men's singles champions at Wimbledon:
An air of calm descended at Wimbledon on 'Tranquil Thursday' as Novak Djokovic and Serena Williams avoided the trail of destruction that had decimated the field at the All England Club on day three of the grasscourt major.
List of Australian Open men's singles champions since the event began in 1905 (Australian unless stated):
For over three-quarters of a century men's tennis in Japan has played out like a kabuki tragedy, filled with decades of barren results, embarrassments and even a suicide.
Britain's Andy Murray won lifted his second Wimbledon title after defeating Canadian Milos Raonic 6-4 7-6(3) 7-6(2) on Sunday. Following that clinical performance, here is a list of Wimbledon men's singles champions since 1922....
Images from Day 5 of the Australian Open in Melbourne on Friday.
'If one thing seemed clear in this week of very uneven tennis in Melbourne though, the much celebrated golden age of tennis may be over.'
'Djokovic is playing some of the best tennis in the history of the game.'