Liverpool boss Jurgen Klopp has admitted concern regarding the fitness of key players after the Premier League restart.
The Reds played out a 0-0 draw with local rivals Everton, which puts them a point closer to clinching the Premier League title.
But they were dealt a double blow with Joel Matip and James Milner coming off during the match.
"'Millie' felt a hamstring a little bit, but we had this in the past. 'Millie' is not often injured and hopefully it is not serious," the Liverpool manager told a news conference.
"He is smart enough to show up in the moment when he feels it, so hopefully it was the right moment. Maybe not Wednesday [against Palace], but after that I would hope for.
"Joel was unlucky and we had to make a quick decision. It was a situation with Richarlison and he bent or stretched his big toe.
"I don't think a lot of people have had that. It is really painful, but hopefully it settles, the pain settles and then we will see. I hope nothing serious has happened, but I don't know yet."
