Liverpool boss Rafael Benitez attributed his side's 1-0 defeat at Bolton to the loss of Sami Hyypia, who had to go off after breaking his nose.
He said: "To lose Sami in the first play was important for us. He's good in the air and all the game the ball in the area was in the air."
Benitez was also unhappy Luis Garcia's goal was ruled out for offside.
The Liverpool manager added: "In our opinion it is a goal - we've seen the television and it is a goal."