The Royals are rock bottom of the league.
"There's going to be pressure at every moment in all these games now," said Mariappa. "Every point is now precious for us.
"We'll have to keep going and look to get ready for the next game.
"There are enough points available to stay up but the games are running out now.
"We were written off before the season started so every game carries its own pressures anyway, but now we need to really get the points on board."