- Spanish Grand Prix
- Fittipaldi stretches lead in Spain
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April 29, 1973: Emerson Fittipaldi increased his lead in the drivers' standings by winning round four of the championship as Montjuich Park played host to the Spanish Grand Prix
April 29, 1973: Emerson Fittipaldi increased his lead in the drivers' standings by winning round four of the championship as Montjuich Park played host to the Spanish Grand Prix