Claim: The 1973 Brazilian Grand Prix Qualifying, a Formula One motor race held at Interlagos, included 20 cars and was won by Ronnie Peterson.
Evidence: The 1973 Brazilian Grand Prix was a Formula One motor race held at Interlagos on February 11, 1973. SwedenRonnie Peterson BrazilEmerson Fittipaldi BelgiumJacky Ickx SwitzerlandClay Regazzoni New_ZealandDenny Hulme BrazilCarlos Pace ArgentinaCarlos Reutemann United_KingdomJackie Stewart FranceFrançois Cevert FranceJean-Pierre Beltoise BrazilWilson Fittipaldi United_StatesPeter Revson AustriaNiki Lauda United_KingdomMike Hailwood FranceJean-Pierre Jarier New_ZealandHowden Ganley ItalyArturo Merzario ItalyNanni Galli United_KingdomMike Beuttler BrazilLuiz Bueno