Williams were clear winners of the 1992 Constructors ' Championship , but the season ended in acrimony as Mansell left the team after Alain Prost was signed .
Patrese moved to Benetton for his swansong season in 1993 .
Williams were clear winners of the 1992 Constructors ' Championship , but the season ended in acrimony as Mansell left the team after Alain Prost was signed , while Patrese moved to Benetton for his swansong season in 1993 .