She then wasted another set point on her own serve before losing the game to go to 5-5.
We have a happiness set point, much like we have a set point for how much we weigh.
He earned a set point at 5-4 up but could not convert, dumping a weak backhand into the net.
Henman reached set point from another mistake, but misjudged a defensive lob and missed on his spinning return, going wide.
Murray won his next service to love and then won the set on Kohlschreiber's serve with his second set point.
He then calmly produced an ace for a second set point and profited from a long Burrieza return to collect early lead.
Hs patient baseline game helped earn him the first set point at 5-4, only for Gulbis to fire a huge ace out wide.
An overhead smash into the net gave Lopez set point at 6-5 in the first-set tie-break, which he converted at the first attempt.
Davydenko then saved a set point before coming from 0-30 down in his next service game to take the set into a tie-break.
Williams had set point but failed to take advantage and Azarenka ensured her opponent paid the penalty by taking the opener on a tie-break.
Having squandered one set point on the Tipsarevic serve, the set was left at 5-2 when the black clouds finally burst and play was suspended.
The defending champion double-faulted on set point in the first set and trailed 3-0 in the second set tiebreaker before he took charge of the match.
Li survived a set point in the ninth game before holding, then broke Williams' serve in the next game on the way to forcing a tense tiebreak.
But he recovered to 5-5 and then won an epic rally with a dipping backhand to the Finn's feet before finding a service winner on set point.
He battled back from 40-0 down at 6-5, and got his reward when, on a fifth set point, his forehand was called wide but subsequently overruled by HawkEye.
Amid the brutal exchange of forehands and backhands, Nadal produced the deftest of drop shots to provide a set point, which was ruthlessly converted with a waspish forehand.
The serve of partner Mirnyi wobbled though and having enjoyed a set point, the pair had to watch their opponents serve out to swiftly take the first set.
The set point theory of well-being appears to be wrong.
BBC: NEWS | Programmes | Happiness Formula | Staying happier for longer
Stosur reached set point for the fourth time on a fluky point with her opponent at the net, hitting a line-drive reflex volley that sent Mladenovic ducking to avoid.
Lopez weathered five break points in the eighth game of the first set and also saved a set point, but was unable to take his chance in the tie-break.
Once again, his serve came to his rescue, a sixth ace earning him a fourth set point and Federer obligingly put his return wide to hand Murray the set.
Three-time defending Dubai champion Djokovic saved a set point in the second-set tiebreaker before beating Tipsarevic 6-1 7-6, while Murray saw off the fifth seed Tomas Berdych 6-3 7-5.
But the Dane returned to winning ways with 23 winners as world number 88 King produced an error-strewn display, double-faulting on set point on both occasions to hand Wozniacki victory.
"The fourth set I should have lost, I was down 11 break points and I only had one break point, it just happened to be on set point, " Chang said.
The Russian broke again for 6-5 when her opponent hit a backhand long, but had to hold off a break point before finally clinching the set on her sixth set point.
It was a huge breakthrough for the fifth seed and he took full advantage by firing down an ace on his second set point to move into the lead for the first time.
The sixth-seeded American -- who had not won a Masters title on the ATP Tour for four years -- fired 13 ace and did not face a single set point in a 7-5 6-4 win.
Errani, who is ranked 23rd in the world, showed plenty of grit to save two set points in the eighth game, but when a third set point came up in the following game Sharapova ruthlessly converted.
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