Kai Wagner is a distinguished left back in Major League Soccer, known for his record-setting assists and key role with the Philadelphia Union. This tag page features news, articles, and updates on his professional career, including his development from German clubs like SSV Ulm and Schalke 04 II to becoming the Union’s all-time assist leader. Coverage includes his MLS All-Star selections, contract extensions, and impact on the team’s success. This tag is relevant for tracking Wagner’s ongoing contributions and milestones in professional soccer.