Clyde goalkeeper Bryn Halliwell pulled off a superb save five minutes from time to give his team a 2-2 draw against Inverness at the Caledonian Stadium.
After dominating early on, Thistle took the lead when David Bagan connected with a low cross from Davide Xausa on the stroke of half-time.
After the break Clyde mounted a surge and their efforts were rewarded when Chris Aitken equalised from Jim Hendry's cross.
With the wind in their sails the visitors went ahead just three minutes later when Brian Smith set up Phil Cannie to head into the Thistle net.
The Jags refused to lay down and with time running out they came storming back and Xausa restored parity with a magnificent 30 yard drive.
Halliwell was then forced to become the Clyde hero as he denied Thistle victory, throwing himself full length to block a low drive from Xausu with five minutes left.