From TheChels.info - The Chelsea Football Club Wiki
|Full Name||Jacob Alexander Mellis|
|Date of Birth||8 January 1991|
|Place of Birth||Nottingham, England|
|Chelsea career||2007 - 2012|
|Debut||23 November 2010|
|Games (goals)||1 (0)|
|Other clubs|| Sheffield United|
Jacob Mellis (born 8 January 1991) is an English midfielder who played for Chelsea until 2012, having joined as a youngster five years earlier. He made one brief first team appearance.
Jacob joined Chelsea in 2007 from Sheffield United, for whom he had already featured as a 15 year-old Reserve player. The deal was reported to be worth up to £1.5m if certain clauses were activated over his career.
Born in Nottingham and coming through the same youth set-up as Jermaine Jenas, it’s no surprise that the Spurs and England midfielder was Jacob’s role model as a young footballer. He quickly became a regular in the line-up and whilst it took him a while to find the back of the net, over the middle period of his first season he netted crucial goals in big games, and made a big impact on Chelsea’s run to the FA Youth Cup Final. At the end of the 2007-08 season, he signed a professional contract with the club
Becoming a reserve regular in 2008-09, his season started with injury problems but finished with a flourish, with excellent performances for the second string, and regularly finding the back of the net. His improvements didn’t go unnoticed, and he was named as a Premier League substitute for Chelsea’s home game against Everton (being assigned the number 50 shirt).
Jacob joined Southampton on loan at the start of the 2009-10 season, and despite decent form, never really got going in a team which was looking to recover from a ten point deduction due to administration. Despite being in good goalscoring form for England's Under-19s, he was unable to secure a regular place and returned to Chelsea at the turn of the year in order to complete enough time to be registered in their Champions League squad for 2010-11.
He made his first team debut as a last-minute substitute in the UEFA Champions League group match against MSK Zilina on 23 November 2010.
In January 2011, Jacob signed a new two-year contract at the club and immediately went on loan to Barnsley, where he scored in each of his first two appearances.
Mellis left Chelsea in March 2012, following a training ground prank in which he let off a smoke grenade in the reserve team dressing room at Cobham. Fellow reserve team player Billy Clifford had brought the grenade to the training ground and was fined for his involvement. 
Jacob has represented England at Under-16, Under-17, Under-18 and Under-19 level. He is a regular in the Under-19s and in November 2009 scored a goal in all three of their European Under-19 Championship Qualifiers to see the Three Lions through to the Elite Round.
Youth Team Football
Reserve Team Football
Senior Club Football
|Season||Club||League||FA Cup||League Cup||Europe||Other||Total|
(Statistics accurate as of the end of the 2010-11 season)