John McGuinness got the 2011 Isle of Man TT underway with the quickest time in a shortened first practice session for the Superbike, Supersport and Superstock riders.
Carrying the number one plate aboard his Honda TT Legends machine, McGuinness and team-mate Keith Amor made the most of their status as the last to set off, the former edging ahead on his second revolution with a 122.838mph.
Amor was classified second of the Superbike riders, though Bruce Anstey was second outright aboard his Padgetts Honda Superstock machine with a speed of 122.752mph
Gary Johnson was third best, the Lincs Lifting Honda rider setting the best time on the first lap, before being overhauled on the second revolution. He emerged ahead of Guy Martin on the Relentless Suzuk and Cameron Donald on the Wilson Craig Honda.
With rain forcing organisers to curtail the day's activities after only two laps, attention turns to Tuesday, where a full bevy of riders will be in attendance, including those that have travelled over from the BSB Thruxton round, including Michael Rutter, Hudson Kennaugh and James Hillier.
In the 600 class, Portuguese rider Luis Carreira was quickest with a 117.612mph, while Anstey was the fastest of the Superstock riders, ahead of Johnson, William Dunlop and Michael Dunlop.