Arminia Bielefeld last match Mainz 05 last match Arminia Bielefeld vs Mainz 05 Key man Andreas Voglsammer could start on the left of midfield after recovering from a foot injury. Central defender Amos Pieper is ruled out with a muscle injury. Joakim Nilsson could start. Arne Maier, a loan signing from Bundesliga rivals Hertha Berlin, is over a knee injury. Sebastian Müller and Reinhold Yabo have..