Senna allegedly pushed for his former flatmate and fellow Brazilian Maurício Gugelmin to join the team as a pure number two driver, but the team's major sponsor John Player & Sons (JPS) insisted on a British driver which led to the signing of Dumfries.
Senna supostamente quería a seu ex compañeiro de piso e compatriota brasileiro Maurício Gugelmin para unirse ao equipo como piloto número dous puro, pero o patrocinador principal do equipo John Player & Sons (JPS) insistiu nun piloto británico, para que levara á firma de Dumfries.