In 2003, Roman Abramovich purchased the majority share of Chelsea Football Club as well as assuming the club's massive debt in a deal worth £140 million.
Since that time, he has spent more than double that amount on players and club improvements to help make the Blues a superpower in the English Premier League and one of the most successful clubs since the turn of the new millennium.
Purchasing new talent for the club has been one of the chief ways that Abramovich has made a difference for the club.
With this summer of 2012 having already seen at least one potentially major signing, we stop and take a moment to look at the biggest and most influential signings of Chelsea's history under Roman Abramovich.
All statistics and historical information provided by Chelsea's official website.