|Date of birth||23 March 1983|
|Place of birth||Sachsen bei Ansbach, West Germany|
|Height||1.90 m (6 ft 3 in)|
|1. FC Sachsen|
|–2003||1. FC Nürnberg|
|2003–2004||1. SC Feucht||26||(1)|
|2004–2011||FC St. Pauli||131||(8)|
|2004–2011||FC St. Pauli II||5||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 22.32, 21 January 2012 (UTC).
Eger played in the youth teams of 1. FC Sachsen, SpVgg Ansbach and 1. FC Nürnberg where he played until 2003 when he moved to 1. SC Feucht. Eger made his debut for the club in a 1–1 draw against 1. FC Saarbrücken, coming on a substitute in a late minute for Stefan Hampl on 2 August 2003 and made his first start in a 0–0 draw against FC Augsburg. On 6 September 2003, Eger played 90 minutes in the game in a 0–0 draw against SC Pfullendorf. Since making his debut, Eger established himself in the first team. On 15 November 2003, Eger scored his first goal for the club in a 2–0 win over FC Schweinfurt 05. At SC Feucht, Eger made 26 appearances and scored one goal.
FC St. Pauli
After one season at SC Feucht, Eger joined St. Pauli on a free transfer. On 31 July 2004, Eger made his debut for the club in a 1–0 win over Wuppertaler SV Borussia where he played 90 minutes. On 11 December 2004, Eger received a red card for brutal foul, just 10 minutes coming on as a substitute in a 2–0 win over Holstein Kiel and hadn't played in the first team because of his sending off. On 5 April 2005, Eger made his return to the first-team in a 1–0 win over Hamburger SV II. On 26 March 2005, Eger scored his first goal for the club in a 4–1 win over Arminia Bielefeld.
On 6 August 2005, Eger scored his first of the season (second goal) in a 4–0 win over Kickers Emden. On 23 August 2005, Eger received a red card after second bookable offence in a 2–0 loss against Fortuna Düsseldorf. The following season 2006-07, Eger made 34 appearances, playing all the league matches of the season. Eger played a key-role with the club that was promoted to 2. Bundesliga. Eger would become one of confident role models both on the square in central defense, and off the field as a socially committed footballer.
In the 2007–08 season, Eger made 28 appearances and began in goal scoring form. The following season, Eger started on 8 August 2008 in a match against Erzgebirge Aue in the DFB-Pokal where he received a straight red card in a 5–4 loss. He made 28 appearances in that season. In the following 2009–10 season, Eger made three appearances and was hardly getting more playing time with center back pair Fabio Morena and Markus Thorandt keeping Eger out of the first team. Instead, Eger spent most of the season being on the bench without coming on a lot. Although his first team time was limited, Eger played in the reserves. During the season, Eger suffered hip problems in the start of the season. By the end of the season, the team secured promotion back to the Bundesliga for the 2010–11 season, finishing second place.
In 2010–11, Eger again did not have much playing time and spent most of the season on the bench. It took until 5 March 2011 when Eger made his Bundesliga debut in a 5–10 against his former youth side 1. FC Nürnberg. On 7 May 2011, Eger scored his first Bundesliga goal in an 8–1 loss against Bayern Munich. At the end of the season, the club finished in last place, resulting in the club returning to the 2. Bundesliga. Following the club's relegation, Eger was released by the club as the club planned to re-build the squad. After his release, president Stefan Orth said releasing Eger was certainly not easy.
On 24 June 2011, Eger signed for League 1 side Brentford on a two-year contract, with the option to extend after two years. He said in an interview that it was 'a dream come true to play in England'. On 6 August 2011, Eger made his debut for the club in a 2–0 win over Yeovil Town where he played 90 minutes in the centre back. However, Eger received lack of playing time throughout the season. At the end of the season, Eger left Brentford, as Uwe Rösler is unable to give Eger a first team place
Eger is a passionate drummer, which showed when he made a guest appearance in Bela B's second solo album Code B. He was even on the single from Black/White, represented in the German charts peaked at 83rd. Eger is a left wing views on politics.
- "Marcel Eger". worldfootball.net. Retrieved 1 July 2011.
- "Der Abschied tut weh" (in German). Official Website of FC St.Pauli. 11 May 2011. Archived from the original on 2012-03-14. Retrieved 8 July 2012.
- "Brentford sign defenders Shaleum Logan and Marcel Eger". BBC Sport. 24 June 2011. Retrieved 25 June 2011.
- "Brentford 2 - 0 Yeovil". BBC Sport. 6 August 2011. Retrieved 8 July 2012.
- "Defender leaves Brentford". Kilburn Times. 25 May 2012. Retrieved 11 January 2013.
- "Interview with Brentford's Marcel Eger: record shopping, politics and FC St Pauli". Regista. 8 December 2011. Retrieved 8 July 2012.