The 31-year-old goalkeeper has been under contract with Borussia Dortmund since July 2022. He previously played for Jahn Regensburg.

Alexander Meyer grew up 50 kilometres north of Hamburg and has been an HSV supporter since childhood. On his 14th birthday, his dream came true when he was invited to a trial training session at his favourite team. He clearly made a good impression and soon joined the Hamburg club as an U15 for the 2005/06 season, moving from local side VfL Oldesloe. From January 2009 onward, he no longer threw balls to the first team players from the sidelines of the Volksparkstadion as a ball boy, but rather saved their shots as he was called up to take part in the squad's winter training camp in Dubai.

Less than six months later, he suffered a serious setback when he was sidelined for over a year due to a shoulder injury. The club had signed a replacement in the meantime, meaning that Meyer, in his first two seasons at senior level, only made ten appearances for HSV's U23 team in the Regionalliga Nord from October 2010 to April 2012. "I probably would have got my first pro contract at HSV if I hadn't injured my shoulder so badly," Meyer later told Goalguard.

After seven years at HSV, the 1.95-metre tall goalkeeper stayed in the fourth tier when he moved to TSV Havelse for the 2012/13 season. However, he also had to battle adversity at his new club after a solid start which saw him appear in the first 13 games of the season. First came another shoulder injury, then a cruciate ligament rupture meant that he only managed to play one game from November 2012 to April 2014. In 2014/15, Meyer was finally injury free, appearing in 33 of 34 games that season. In 2016, he left Havelse after 93 Regionalliga appearances to join Energie Cottbus, where he immediately became the number one goalkeeper, but again suffered a serious injury which meant he missed six months of action.

On 13 August 2017, Energie Cottbus faced VfB Stuttgart in the DFB-Pokal. Although the former Bundesliga club ultimately lost in a penalty shoot-out, they had Meyer's many saves (including a penalty) to thank for getting there in the first place. 14 days later, he played his last game for Cottbus and signed for VfB as a back-up to Ron-Robert Zieler shortly before the close of the transfer window. Unfortunately, injuries continued to plague him: in July 2018, he tore his cruciate ligament in training. At the end of the season, Stuttgart were relegated from the Bundesliga and parted ways with their second-choice keeper.

Despite his multiple battles with injury, Meyer has developed an excellent reputation as a goalkeeper. He exudes calmness while also being able to trouble opposing strikers with his physicality and presence. In his three seasons at Jahn Regensburg, he made 94 Bundesliga 2 appearances - only Heidenheim's Kevin Müller made more in the same timeframe (100 matchdays) - and conceded just 135 goals, one every 68 minutes. In the 2020/21 season, he saved 74% of opponents' shots on goal, compared to 69% in the previous season. He also earned the reputation of the "penalty killer". Out of eleven penalty kicks conceded by Regensburg, only six were converted, with Meyer making three saves. "He took his skills of anticipation to new levels in 2020/21. In the cup, Jahn won three consecutive games on penalties, with Meyer saving five in the process," reported the portal Spox.

"Alexander Meyer convinced us both as a footballer and as a person. In him, we are getting a very experienced goalkeeper who radiates calmness and has demonstrated his quality as a regular starter in Regensburg over the past few years. He was without doubt one of the best keepers in the Bundesliga 2,'' said BVB sporting director Sebastian Kehl after Meyer's arrival in Dortmund. The keeper is already looking forward to the new challenge: "When a club like BVB come calling, you don't have to think twice. From a sporting point of view, they're an absolutely top side, and that's before you even mention the atmosphere in the stadium. Just thinking about the yellow wall gives me goosebumps."