Wanyama was booked for a harsh tackle on Craig Liam midway through the second half as Rowan Vine completed the misery for Lennon's sideScottish Premier League side Celtic FC succumbed to a shock 2-1 league defeat away to St Johnstone in an early kick of game played at McDiarmid Park on Saturday.
Kenyan midfielder Victor Wanyama who was forced off at halftime in the previous match owing to injury, was declared fit to start the match, that started on a bright footing for the visitors, after Winger Cris Commons powerful drive from 25 yards secured the lead for the 'Bhoys' after only four minutes.
The lead only lasted 14 minutes with Gregory Tirade taking full advantage of slack defending to level matters.
Wanyama was booked for a harsh tackle on Craig Liam midway through the second half, and the misery for Celtic coach Neil Lennon was completed by a composed finish from Rowan Vine ten minutes from time.
The result, which ends Celtic's unbeaten start to this campaign, also sees the defending champions drop to third position on the SPL standings. Celtic's next assignment is a Champions League group stage opening tie at home to Portuguese side Benfica.