sentences:  On the flying second lap, Bob McIntyre laps the Mountain Course in 22 minutes and 24.4 seconds an average speed of 101.03 mph, breaking the overall lap record and the first 100 mph lap.The feat is again repeated on the 3rd lap at an average speed of 100.54 mph and the 4th and 6th lap at an average speed of 101.12 and 100.35 mph respectively.By lap 4, Bob McIntyre led the 1957 Senior TT Race from John Surtees by 2 min and 10.2 seconds and is only 9.8 seconds behind Surtees on the road.