The Baggies are struggling at the bottom of the table, seven points from safety.
“We have shown many times this season that we can cope with this level and we need to show it again for the next few games,” Koren told the club’s official website. “Of course, there is a lot of pressure on us and we need to cope with that. That shouldn’t be an excuse or a problem for us to deal with.
“There are eight games to go and we need to win as many as we can to stay in The Premier League. We need to win four or five of our remaining games.
“We still need to believe and to show the desire we have shown defensively in the last two games and then, offensively, score more goals.
“We have got Stoke to play at home next after the internationals and, if we can beat them, I believe the fight will be open again.”