The injury occurred during the September 19th game against the Russians. Murray allowed four goals during that game, and was pulled in favor of John Gibson. He admitted after the game that he jammed his thumb during the second period and tried to play through it.
The 22-year-old was 15-6 with a 2.08 goals-against-average during the 2016 Stanley Cup Playoffs. If Murray isn't ready, Pittsburgh will have to go with Marc-Andre Fleury, who had a .921 save percentage in 58 games last season.
The Penguins will open the season on October 13th against the Capitals.