Emerson Fittipaldi, Al Unser Jr. battle (1989)
After Tero Palmroth lost a tire to bring out the yellow flag on lap 181 of the 1989 Indy 500, racing resumed on lap 186 with Al Unser Jr. on Emerson Fittipaldi's tail. Unser took the lead four laps from the finish. Fittipaldi charged after Unser until the two encountered traffic on lap 199. As Fittipaldi pulled even with Unser heading into Turn 3, the two touched and Unser's car slammed into the outside wall. Fittipaldi kept his car under control and took the checkered flag. Unser climbed out of his wreckage, walked up the track and gave Fittipaldi a "thumbs-up" salute.