Sock showed the sort of fighting spirit that enabled him to win the Paris Masters title and sneak into the last Finals spot, getting back on serve when Cilic fired a forehand into the tramlines under pressure.
Nadal, who certainly enjoys playing on clay, had earlier vented his frustration about the hard-court surface at the ATP Finals and suggested that it would be better if the season-ending event at least occasionally took place on his preferred surface.
Watch as they tackle some of the most famous phrases to come out of London's East End, with Federer's befuddled response to, "Blimey mate, I'm Hank Marvin" a particular highlight.
It even won him a 4-0 lead in the ensuing tie-break, only for Federer to up the ante and squeeze him into he bursts. "I'm relieved and I know now I can play freely against Marin Cilic knowing that I have qualified".
Ultimately, the more experienced Croat Cilic, who has a poor record in the end-of-season finals, proved just too erratic, mixing his 35 outright winners with 37 unforced errors.
"It was a good battle and I always enjoy myself at this handsome arena", said Federer, who has now reached the semi-finals 14 times. It's an unbelievable atmosphere here and I love playing in London and in front of the fans here.
"Definitely disappointing in both matches in that third set, being in a good position, putting myself in a good position", he said.
"I'm just going to try to be a little bit more stubborn in my preparations maybe for the next match, and hopefully next year".
How Australia Voted In The Same-Sex Marriage Survey
Ultimately it was up to parliament to decide which bill was the "vehicle to facilitate" the parliamentary debate. Senator Paterson believes state and federal anti-discrimination laws aren't strong enough.
IEA cuts oil demand forecast
But analysts expect the price to not rise much further in coming months as the US ramps up production. Growth in energy demand is half what it would have been without improvements to efficiency.
Thieves tunnel 25 feet into bank near Mumbai
According to reports, the accused robbers, who are yet to be caught, had allegedly rented a shop next to the bank in May. The bank, incidentally, had not installed CCTV cameras in the locker room to protect the customer's privacy.
Apple Watch retakes lead of wearables market, Xiaomi second
The Motley Fool has the following options: long January 2020 $150 calls on Apple and short January 2020 $155 calls on Apple . Despite the late launch in the period, a quarter of the total Apple Watches sold were LTE S3 Apple Watch models.