"The best teams work the hardest," said Redknapp.
"People think the best teams just play football. It's a fallacy. The best team in the world is Barcelona and they are hardest-working team.
"They work harder than anyone else without the ball and they work harder than anyone else when they've got the ball.
"We've got to work hard too. It's not a case of picking scrappers. Whoever I pick, whether they think they're skilful players or not, they've all got to work.
"We can get out of it. We're playing well. If we were in bad form I'd be more worried."