Kai Wagner is a German left-back who has developed into one of the most consistent and valuable defenders in his league, currently showcasing his talents for Birmingham City. At 29, Wagner combines defensive solidity with exceptional delivery from wide areas, making him a potent weapon. His career began in Germany before a move abroad saw his game mature significantly. At Birmingham City, he has become a cornerstone of the defense, known for his pinpoint crosses, set-piece threat, and tenacious tackling. His market value reflects his importance, and he has been instrumental in the club's push for promotion, earning multiple Team of the Season accolades. A career highlight was providing two assists in a playoff final victory. Wagner has evolved into a complete modern full-back, essential for both stopping attacks and launching them, and is regarded as one of the best in his position in the Championship.