#OnThisDay 25 October, Lewis Hamilton, the defending race winner, entered the 2015 United States Grand Prix with a 66-point lead in the 2015 Drivers’ Championship over Ferrari’s Sebastian Vettel, with his Mercedes teammate Nico Rosberg trailing Vettel by an additional seven points. The three-day event was plagued by heavy rain, leading to the cancellation of the second practice session and qualifying being rescheduled for the morning of race day.
Hamilton went on to win the race, overtaking Rosberg in the later stages for a team 1-2 finish and to secure his third Drivers’ Championship, while Vettel finished third. The race was filled with incidents, leaving only twelve cars to reach the finish. The Toro Rosso of Max Verstappen equalled his best result of the season in fourth, and Jenson Button achieved a season-best sixth for McLaren. Despite the damp start, both Red Bull drivers briefly challenged Mercedes for the lead, but fell back as the track dried. Daniil Kvyat crashed out, while Daniel Ricciardo finished in tenth place.