Per Mertesacker may have won the World Cup in the summer but he now faces a big task in helping Arsenal compete for the Premier League and Champions League.
Although they are unbeaten in the league they have not been convincing and Dortmund destroyed them in the first Champions League game. But as Mertesacker has proven in the past he usually gets better as the season goes on and his partnership with Laurent Koscielny has been one of the best Arsenal have had for a while. The 30 year old has never been blessed with pace so there is no reason why his performances should drop in the later years of his career.
The 6 foot 6 defender started his career at Hannover and after playing under his father in the youth teams he made his league debut in November 2003 against FC Koln. Early in his career there were suggestions that he would not become a footballer and pursue another career, especially after a shaky start which saw him score an own goal and also broke his nose.
But he recovered from this and became known as one of the most promising defenders in Germany and was also known as a defender that timed his tackles perfectly, only picking up two yellow cards in his 76 league appearances for Hannover. After three years he played his last game for the club on the 13th May 2006 against Bayer Leverkusen and opened the scoring in a 2-2 draw.
After an impressive 2006 World Cup, Mertesacker joined Werder Bremen. He did not get off to a quick start at the club as he was out injured for the first month of the season but when he did return he became a rock in the centre of the defence. In November he scored his first Champions League goal against Chelsea in a 1-0 win.
The 2007-08 season was a mixed bag for the defender as he received the first red card of his career in a 6-3 defeat to Stuttgart but played in every game he was available and helped the club finish as runners up in the league, finishing with just two less wins that eventual champions Bayern Munich. For the rest of his time at the club he proved he was more than just a defender that won headers as he had improved a lot when he had the ball at his feet. This was part of the reason why Arsene Wenger signed him.
He played 210 times for Bremen before joining Arsenal on the 31st August 2011. They had just been beaten 8-2 by Manchester United at Old Trafford and desperately needed reinforcements at the back. Mertesacker started well and was consistent throughout his first season before it was cut short by injury in February 2012. He returned for the start of the 2012-13 season and helped keep two clean sheets in the opening two games against Sunderland and Stoke City. His performances continued to improve and he was awarded the man of the match after a 1-1 draw away to Manchester City.
Arsenal fans then loved the centre back even more after he scored his first goal for the club in a 5-2 win over Tottenham Hotspur and this was when the German and Koscielny were in great form together and were arguably the best centre back partnership in the league. But it was last season that he showed his top form as he was voted into the Premier League Team of the Year for his fantastic performances and on the 4th March 2014 he was rewarded with a new contract by the club.
The final word can go to Arsene Wenger. “I think he is a good player. He is a good organiser as well, he understands the game, he is an intelligent player. Now we look less nervous at the back, and I think he contributes to that.”