Complex sentence: On 15 October 2011 he made his Bundesliga debut at the 1--2 home defeat against Kaiserslautern as an alternative for Fährmannn who was sent off.
Split into simpler sentences: On 15 October 2011 he made his Bundesliga debut at the 1--2 home defeat against 1. FC Kaiserslautern as an alternative for Fährmannn who was sent off.