Yaya Toure scored the only goal of the game on 70 minutes.
Pellegrini said: "I think it is normal during the season that sometimes the strikers may lose (the chances) to score but I trust in all of them. I am sure they will recover their normal performance.
"We didn't create many chances because Stoke defended very well.
"All the team were behind the ball and near the box, but we had the patience for the 90 minutes and finally we scored."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball