#1 Sunday rains and some luck favors Hamilton and Mercedes
Going to bed on Saturday after qualifying, 'damage limitations' would have been decided as the strategy for Sunday in the Mercedes camp. Instead, 24 hours later, they had both their drivers on the podium. More importantly, their rival, Ferrari had both their drivers out of the race on lap 1.
At the end of the year, when we look at the 2017 calendar, the Singapore Grand Prix could prove to have been the turning point.
With six races to go, Hamilton is now 28 points clear of Vettel while in the Constructors, Mercedes are 102 points clear of Ferrari. Although six races is a lot of time, it's being able to win and win big at a track where they weren't favored that means a lot for both Mercedes and Hamilton.