The number nine - a number that many great players have worn through the years.
Players such as Alan Shearer and Ronaldo are prime examples of great footballers who donned the number nine shirt for their respective clubs.
At Chelsea, however, some players have proven anything but great.
Some Chelsea players who have worn the number nine actually made the desired impact at Stamford Bridge. Players including Gianluca Vialli and Jimmy Floyd Hasselbaink wore the number nine shirt with esteem, whilst most notably, Peter Osgood, became an all-time great in the jersey.
However, some players are at the other end of the spectrum. Here GMS counts down five of the worst players to don the number nine.
5. Fernando Torres
Many people will disagree with this - but plenty would agree. As a striker, Fernando Torres hasn't made the impact that was expected of him.
Since his £50 million move from Liverpool, Torres hasn't rekindled the form that made him a fan favourite at Anfield.
4. Steve Sidwell
Arriving on a free transfer from Reading, a lot was expected from Steve Sidwell.
But the Englishman didn't feature regularly and struggled when picked.
The following season, he was sold.
3. Franco di Santo
Despite only playing a handful of times, Franco di Santo goes down as a terrible Chelsea number nine.
He was loaned at regularly and didn't settle to life at Chelsea. A lot of expectation was put on him, and he was eventually sold.
2. Khalid Boulharouz
Dutch centre-back Khalid Boulharouz joined from Hamburg in 2006, and was surprisingly given the number nine shirt.
Many people questioned the decision to why a centre back was given a typical strikers number. Boulharouz failed to justify his transfer and was sold the following season.
1. Mateja Kezman
A signing that made the world shudder. Serbian Mateja Kezman had 105 goals in 122 games for PSV and was regarded as one of Europe's hottest properties.
But, like every player above him, he struggled at Chelsea.
Scoring a total of four league goals all season, Kezman was sold in the summer.
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