Sebastian Vettel can make his 100th Formula One race a historic one by being crowned the youngest triple world champion on Monday in Texas.
The 25-year-old German and his Red Bull team could make it a night for double celebrations if they take both the drivers' and teams' titles in a country where he made his debut as a baby-faced 19-year-old stand-in at Indianapolis in 2007.
That last United States Grand Prix, five years ago, was won by Briton Lewis Hamilton of McLaren and, this time around, he will once again be a major contender for victory in his second-to-last race for the team before he leaves for Mercedes.
But championship leader Vettel and Hamilton know they face a challenge this weekend from two-time champion Spaniard Fernando Alonso of Ferrari. He is 10 points behind the German in the title race and convinced he can secure a third title.
Finn Kimi Raikkonen of Lotus, winner in Abu Dhabi, will also be a threat.