Gio Reyna scores another crucial winner for Dortmund in stoppage time
Julian Ryerson strikes back with equalizer for Dortmund
Lee Jae-Sung scores off corner against Dortmund
Gio Reyna nets 2nd straight Dortmund winner
Borussia Dortmund substitute Gio Reyna tapped in a stoppage-time goal to give his team a 2-1 victory at Mainz 05 on Wednesday.