Liverpool have experienced more injury misery with the confirmation that both Albert Riera and Yossi Benayoun will be out for up to four weeks.

Both players sustained the injuries in the controversial 2-2 draw with Birmingham on the weekend and now Reds boss Rafael Benitez will have to make do without them for the best part of the next month.

"Both Yossi Benayoun and Albert Riera have muscle problems and will be out for three to four weeks. It depends on each player, but for Riera this is the second time with this injury," Benitez told the club's official website.

"We will have to wait and see how they progress but hopefully in three weeks they could be available.

"We are disappointed because there are too many things at the moment that we can't change. Both players are wingers as well and for them to be out at the same time is bad news for us."