The 29-year-old stopper left the training ground at the Aspire Academy for Sports Excellence accompanied by club doctor Peter Ueblacker, with his right hand wrapped in an ice pack. Following assessment at a local hospital, fears of a fracture were allayed.
Update on Sven #Ulreich: The #FCBayern goalkeeper has sprained his middle finger (right hand). His return to training will depend on how quickly the swelling goes down. No long-term absence. pic.twitter.com/wxFhs3GQy2— FC Bayern English (@FCBayernEN) 3 January 2018
With no definitive timeline set for the return of first-choice goalkeeper and long-term absentee Manuel Neuer (foot), any injury to Ulreich would come as a huge blow to Bayern. The former Stuttgart man has deputised superbly so far this season, keeping eight clean sheets in 21 appearances in all competitions.
Tom Starke, the 36-year-old who came out of retirement in the summer to help with Bayern's mini crisis between the posts, is the record champions' only other tried and tested custodian.
Bayern return to Bundesliga action on 12 January with a trip to Bayer Leverkusen.