Budući da je bio prestavljan kao budućnost njemačkog nogometa, Deislerova karijera bila je razočaravajuća zbog ozljede križnih ligamenata i drugih ozljeda, kao i depresije.
Having been hailed as the future of German football at the turn of the millennium, Deisler's career proved a disappointment as the midfielder never managed to reach his full potential due to several cruciate ligament ruptures and other major injuries, as well as depression.WikiMatrix WikiMatrix