Rafael da Silva hopes to keep his place in Manchester United's team for today's clash with Chelsea.
"The Derby game is forgotten now," Rafael told ManUtd.com. "It is gone. We have been thinking about Chelsea since the Derby game finished.
"Many of our (senior) players did not play against Derby, and they will be back this weekend. It is best we forget the Derby game."
Chelsea will be the first major rivals to visit Old Trafford this weekend. Rafael, scorer in United's last "big four " game at Arsenal, feels the Reds need to edge these high-profile matches in order to retain the title.
"We have played all the big games away from home, now we are at home," he said. "It is important we win big games like this. If we beat Chelsea, Liverpool and Arsenal we will be nearer to the title."