Middlesbrough manager Gareth Southgate was full of praise for striker Mark Viduka after he gave a superb display in the crucial 3-1 win over Sheffield United.
Viduka scored once, with Yakubu grabbing the other two, as Boro moved six points clear of the relegation places.
Southgate said afterwards: "Mark is a class act and I think he has got as much ability as any striker I played with.
"He has made a massive difference to us in this period since he came back into the side.
"There is a misconception about him that people have because of the way he runs and the way he moves, but not everybody can tear around the field for 90 minutes and those who do possibly aren't as effective.
"I appreciate what he gives us on and off the field."
Viduka joined Boro in the summer of 2004 from Leeds United and has netted 16 goals in 58 Premiership appearances for the Teessiders, but he is out of contract at the end of the current campaign.