He has been particularly noted for his composure; Germany manager Joachim Löw said he is "impervious to pressure" and former Bayern manager Louis van Gaal said he has tremendous mental strength.
Dia telah dikenal karena ketenangannya; manajer Jerman Joachim Löw berkata bahwa dia "tahan terhadap tekanan" dan mantan pelatih Louis van Gaal berkata bahwa dia memiliki kekuatan mental yang sangat tinggi.