Bayern Munich suffered a 3-1 loss at Stuttgart and an injury to Raphaël Guerreiro on Saturday in its last Bundesliga game before the Champions League semifinal second leg at Real Madrid. Guerreiro went off early with what looked like a muscular injury and is a doubt for Wednesday's decisive match in Madrid. Borussia Dortmund's B-team warmed up for Tuesday's semifinal at Paris Saint-Germain with a 5-1 rout of visiting Augsburg.