 At the Quarterbridge, Karsten Schmidt slipped off during Tuesday evening practice, William Dunlop and Roger Maher at the Waterworks and Conor Cummins and Alan Chamley collided at Laurel Bank.After the cancellation of Wednesday evening practice session due to low-lying mist on the primary A18 Mountain Road section of the TT Course the next TT Race practice was held on the evening of Thursday 31 May 2007.The traditional Thursday afternoon practice session held since 1937 was moved to an evening practice session in line with the Manx Grand Prix to increase the availability of race marshals.