Home Valentin Gruber Offense Assistant Coach Valentin Gruber By Lukas Leitner - Sep 7, 2016 Facebook Twitter Pinterest WhatsApp Armin JafariChristoph PutzDan HawkinsDr. Christian GäblerLukas WallaMax KoesslerMax PuchsteinMike LatekRoman FloredoValentin Gruber Nationality AustriaCurrent TeamVienna Vikings