Champions Bayern Munich crashed 5-1 at Eintracht Frankfurt on Saturday for their first Bundesliga season defeat while Union Berlin ended a winless run spanning three-and-a-half months 3-1 against Borussia Mönchengladbach. Bayern would have gone top for at least a day with victory in Frankfurt but were 3-0 down after 36 minutes from Omar Marmoush, Eric Dina Ebimbe and Hugo Larsson. Joshua Kimmich pulled one back in the 43rd but Dina Ebimbe completed a brace in the 50th and Ansgar Knauff got the fifth 10 minutes later as Frankfurt ended a run of four defeats in all competitions. Frankfurt beat B…