Kai Wagner
Kai Wagner ( born 15 February 1997 ) is a German footballer who plays as a left back for Philadelphia Union in Major League Soccer . 
<triplet> Kai Wagner <subj> 15 February 1997 <obj> date of birth <subj> left back <obj> position played on team / speciality <triplet> left back <subj> footballer <obj> sport <triplet> Philadelphia Union <subj> footballer <obj> sport <subj> Major League Soccer <obj> league <triplet> Major League Soccer <subj> footballer <obj> sport <subj> Philadelphia Union <obj> subsidiary