?Race recap: 2015 British Grand Prix is a testament to timing - Autoblog (blog)

Especially when you are trying to defend the undercut from a car that was only 1s behind you. Also, they really messed up by not pitting one car as early as possible and leaving the other out as long as he could hold off Hamilton, if necessary, switching to a 2 stop for the "hare", because stopping a Hamilton undercut of both cars was... Incredibly, Mercedes tried to fake them into pitting early, employing a clever meta strategy there, it would seem. With Hamilton still behind one Williams, the other Williams blazing up from behind on a clear track would have stymied Hamilton's undercut. Track position is everything and if they got to the rain ahead, Mercedes may have been the one forced to make some unwise gamble on tires and end up like Raikkonen or worse. Source: www.autoblog.com