Wally West
Fastest Man Alive
None of the Flashes could reach lightspeed quick enough before the Lantern's reacted and had their shields up.
Many Green Lantern's have been seen to move at superspeeds anyway which requires incredible reflexes and reactions, go to the Kyle Rayner respect thread and theres a scan of him keeping up with Flash (Wally). John Stewart was fast enough on the draw to stick Superman in a construct when he was moving at superspeeds in the Sacrifice arc. And, someone correct me if I'm wrong as its ages since I read it and it might not be in continuity, but theres a JLA issue where Flash gets put into a bubble by some Green Lantern and he is stuck in it for ages and has to ram himself into a mountain at huge speeds to break it, and breaks his nose in the process.
Team Flash be screwed, that Green Lantern team is badass.
Edit: Forget what I wrote about Zoom, I thought it was Zoom II, the Flashes have even less chance now.