Marc Marquez's amazing MotoGP rookie run continued on Sunday with victory in the Indianapolis Grand Prix - the Honda rider's fourth win of his debut season.
The 20-year-old Spaniard took the lead on lap 13, diving under Jorge Lorenzo on turn two.
Marquez led the rest of the way, finishing the 27-lap race in 44 minutes, 52.463 seconds.
His countryman and Honda teammate Dani Pedrosa was second, 3.495sec back.
Yamaha rider Lorenzo - the reigning world champion - was third, 5.704sec behind the winner.
Marquez began his first MotoGP campaign in April with a third-place finish in the season-opener at Qatar.
At the Circuit of the Americans race in Austin, Texas, he became the youngest rider in series history to win a pole and a race.
He failed to reach the podium only once this year, after a crash at a race in Mugello in June.
With his win on Sunday, he completed a sweep of the season's three US races. He also won at Laguna Seca last month.
"I didn't make such a good start," said Marquez, notching his third straight win and fourth of the season. He also won in Germany.
"But I knew before the race that the most important part was toward the end of the race. I just tried to follow Dani and Jorge. Then I tried to attack. Now we go back to Europe, and we would like to continue."