 Complete the following phrase:  Race D featured a tense lead battle between Martin Stretton and Nigel Corner, the latter driving the Maserati 250F with which Juan Manuel Fangio had won the 1957 Monaco Grand Prix. Corner retired with gearbox failure and soon afterward the 250F of Klaus Edel dropped a large amount of oil at Sainte Devote. This caused Gregor Fisken and Spencer Flack to crash out of third and fifth respectively, and the race was red-flagged after seven of the scheduled ten laps. Mosss winning 250F from 