Claim: 1965 United States Grand Prix had 18 drivers, one of whom was Jim Clark.
Evidence: United_Kingdom Graham Hill United_Kingdom Jim Clark United_States Richie Ginther United_Kingdom Mike Spence Italy Lorenzo Bandini United_Kingdom Jackie Stewart Australia Jack Brabham United_States Dan Gurney New_Zealand Bruce McLaren Sweden Jo Bonnier Switzerland Jo Siffert United_States Ronnie Bucknum Austria Jochen Rindt United_States Bob Bondurant Mexico Pedro Rodríguez United_Kingdom Richard Attwood Mexico Moisés Solana United_Kingdom Innes Ireland