West Ham United boss Avram Grant was delighted with Thomas Hitzlsperger's performance in victory over Stoke City.
West Ham crushed the Potters 3-0.
Grant, who brought in four players in the January transfer window, said: "Thomas is like a fifth signing in January.
"He's had a big impact because, with him, our midfield has more balance.
"He knows how to defend, he can pass the ball, he can score like today.
"He's important for us but I must say all the new signings are doing well, and also the players that played before."
