VfB Stuttgart had a swallow a stoppage-time 3-3 against Mainz after wasting a two-goal lead earlier in the Budesliga on Saturday while 10-man Borussia Dortmund were held 0-0 at Werder Bremen. Stuttgart led 2-0 after 15 minutes from Enzo Millot tap-in and Jamie Leweling’s blast into the top corner but a penalty from Nadiem Amiri and Jonathan Burkardt’s diving header in the 62nd put Mainz level. Fabian Rieder’s 88th-minute free-kick, which hit the post but went in off goalkeeper Robin Zentner, seemed to have won it after all for last season’s runners-up. Rieder hit the bar with another free-kick…