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Robert Mosteller is an American racing driver competing in the TGRNA GR Cup North America series for Skip Barber Racing. Across two career starts, Mosteller has yet to secure a win, podium, or championship, and remains an active competitor in the category. His current Racer Rating stands at 1,118, placing him 12,040th among active drivers on the database's Elo-style scale, on which the world's top drivers typically sit in the range of 10,000 to 11,500.[1]
In the 2026 season, Mosteller has competed in one round of the TGRNA GR Cup North America schedule, without recording a win or podium finish, and sits P12 in the season standings. His record to date reflects an early stage in his career at this level of competition.
SOURCES: [1] INDEXED RACE CLASSIFICATIONS