Chelsea have a key Champions League showdown looming, with the knowledge that anything less than a victory could seriously jeopardise their hopes of qualifying for the knockout stages of the tournament.
Roberto Di Matteo's side welcome Group E leaders Shakhtar Donetsk to Stamford Bridge Wednesday, having picked up only four points from a possible nine.
The Ukrainian side has been both a dominant force in Europe and domestically, having won all of their 14 games in the Premier League.
With a team made up of several notable Brazilian imports, Shakhtar play entertaining, free-flowing football whilst also being well-organised and disciplined defensively.
Here are six key players in the Shakhtar lineup—players that Chelsea will need to stop if they're to give themselves the best chance of winning the crucial European clash.