MGP organisers say Friday's race schedule has been tweaked after delays to today's action on the Mountain Course.
Roads are due to shut at 6pm and reopen no later than 9pm tonight, but they say there won't be enough time to run two races and so this evening will feature one race and two parade laps.
It means Friday will now see the Historic Junior, Historic Senior and Senor Classic events.
And the Formula One Classic TT race has been cancelled.

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