Dom Thomas's double got Kilmarnock out of trouble as they kick-started their Betfred Cup campaign with a 4-2 win over Clyde.Killie were looking to bounce back from losing their Group E opener to local rivals Ayr but appeared in all sorts of trouble at Rugby Park when the Bully Wee responded to Rory McKenzie early strike with quick-fire goals from Darren Ramsay and Kevin Nicoll.But the League Two upstarts were denied a shock win when Thomas netted twice after the break.McKenzie then completed his own brace as Killie kept their quarter-final hopes alive while Clyde finished a man light after defender Jordan Stewart was sent off.The hosts thought they had got off to the perfect start when they struck just seven minutes in as McKenzie finished off a clever corner routine.But two minutes of madness put Kilmarnock in trouble.The first set-back came just three minutes after the opener when Kirk Broadfoot's slip-up left his team exposed, with Ramsay taking full advantage to lash home the equaliser.Clyde found themselves ahead 60 seconds later when Darren Miller's brilliant free-kick was headed home by the unmarked Nicoll.Home boss Lee McCulloch responded by sending on Chris Burke - signed just two hours before kick-off - for the start of the second period.But it was their summer signing from Motherwell who turned the gameFirst Thomas equalised with a clever drag back and finish after 53 minutes.And he put his team in front just before the hour mark when his long-range daisy-cutter skipped past goalkeeper Blair Currie into the bottom left corner.McKenzie added number four in the 68th minute when a loose ball broke to him in the box.Clyde's hopes evaporated completely moments later as Stewart received a straight red for lunging in on Adam Frizzell.ends