QPR face a tricky test as they take on surprise package Sheffield United at Loftus Road.

Despite only being promoted last term, the Blades currently sit at the top of the Championship after making a fantastic start to life back in the Championship.

But who are the key players to watch out for this evening? We take a look at Sheffield United's star men.

Jack O'Connell

The defender has been a key part of the Blades excellent start to the season, leading by example at the back.

The 23-year-old is a commanding presence in both penalty areas and will be crucial to ensuring that they keep out the power of QPR's attack.

Mark Duffy

The 32-year-old has made a successful career for himself in the football league, and will be delighted to have a chance at challenging for promotion to the Premier League. Duffy has contributed one goal and four assists for his side this term, and is certainly one of the main creative forces in an attacking Blades team.

Billy Sharp

If you're looking for a natural Championship goalscorer you can't look any further than the 31-year-old. The former Scunthorpe United and Doncaster Rovers man has scored six goals already this term, and will be fundamental if the Blades are to last the pace this season.