Out of contract following 2019 season.
Kratz is a versatile midfielder who spent most of his career in Germany. He made 27 appearances and two starts in his second season in Atlanta, scoring his only two goals coming off the bench against Montreal. In that game, he became the first player to score on two direct free kicks in a match after coming on as a substitute
OUTSIDE MLS: Kratz has appeared in 277 career matches, 122 of them coming from the Bundesliga first and second division respectively. Kratz accumulated four goals and 13 assists in his time there. Kratz would ultimately spend three seasons with Bayer 04 Leverkusen's reserve team, then joined Alemannia Aachen and would later transfer to Eintracht Braunschweig. With his new club, Kratz won promotion to the Bundesliga in 2013. After the 2013–14 Bundesliga season, Kratz transferred to SV Sandhausen.
