Blackburn Rovers boss Paul Lambert has warned his players about the potential of an Emirates FA Cup upset on Monday evening.
The Blues face Newport County in a re-arranged tie following the postponement of the initial game last weekend.
Newport County v Blackburn Rovers
The Emirates FA Cup
Third Round Proper
7.15pm, Monday 18 January 2016
Rodney Parade, Newport County FC
Winners receive £67,500 from prize fund
Live on S4C
And the former Aston Villa and Norwich City chief knows that the Championship side will need to be fully focused on their performance if they want to avoid becoming the latest team to be dumped out of The Cup by a lower-ranked club.
"If we aren't right then we will have an uncomfortable evening," said Lambert, who takes his squad to South Wales after a defeat to Brighton & Hove Albion at the weekend.
"If we do it right and we are up and at them then hopefully we'll go through and hopefully our better quality will rise to the top.
"If we go there and think it is going to be pretty easy, no, we have to be right on it. Cup football can throw that at you."
Lambert is no stranger to Cup shocks either – his Villa side were knocked out by Sheffield United two seasons ago and he has been quick to remind his players of an upset he suffered during his own playing days.
"I remember getting beat at [Borussia] Dortmund in the German Cup away from home," explained Lambert, who spent almost two years with the German club between 1996 and 1997.
Lambert, with then County boss John Sheridan, in the rain ahead of the postponed first game last Saturday
"We were European champions and we got beat by an amateur team 2-1.
"That happens all over the world, cup shocks are everywhere.
"If we don't go down there right and if we don't approach it right then it will be uncomfortable.
"The lads know what they've got to go and do."