* Verstappen secured his seventh pole of the season * Champion earlier won sprint race from pole as McLarens collided Norris second on grid, Piastri sixth * Leclerc qualified third, Russell fourth (Adds details and quotes) By Alan Baldwin AUSTIN, Texas, Oct 18 (Reuters) – Max Verstappen seized pole position for Sunday's U.S. Grand Prix while Formula One leader Oscar Piastri qualified sixth after a costly sprint race collision with his McLaren teammate Lando Norris. Norris, polesitter at Austin's Circuit of the Americas last year, will start alongside Red Bull's reigning champion on the front row with both hoping to take a big bite out of the Australian's advantage. Piastri is 22 points clear of Norris and 55 ahead of Verstappen, who won the sprint from pole while both the McLaren drivers r

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