Two of football's biggest names have launched stinging attacks on Nathan Fyfe's defensive game recently, but a closer look at the Fremantle captain's statistics show the duo are off the mark.

Premiership coaches Mick Malthouse and Paul Roos both believe Fyfe doesn't work hard enough when the Dockers don't have the ball and lets his opponent run off him.

Nat Fyfe was criticised for his defensive running against the Suns, despite official AFL stats rating him the best player on the ground. Credit:AAP

Roos, who coached the Swans to a premiership in 2005 against West Coast, said Fyfe's defensive running was at the lowest end of AFL standards after the Dockers lost to Gold Coast by three points at Metricon Stadium on Sunday.

"I know [he] is an outstanding player ... [but] some of his off-ball running is bottom end. It’s just absolute bottom,” he told Fox Footy’s On The Couch on Monday.