Sweeney also announced the following update on forward David Backes:
"David Backes underwent the removal of the olecranon bursa from his elbow on Monday, October 24. His condition will be updated after the weekend."
Austin Czarnik has skated in two games with Boston in 2016-17 - his first two career NHL games - and recorded two penalty minutes. He has also skated in two games with Providence this season, posting one goal and two assists for three points.
He appeared in 68 games with Providence in 2015-16, tallying 20 goals and 41 assists for 61 points with a plus-17 rating. The 5-foot-9, 167-pound forward ranked 7th in the AHL in points and 11th in assists in his rookie season with the P-Bruins.
Prior to joining Providence, Czarnik finished up his senior season at Miami University (Ohio) in 2014-15, appearing in 40 games while registering nine goals (tied for fifth on the team) and 36 assists (led the team) for 45 points (led the team) with a plus-five rating. The forward led the Redhawks the previous three seasons (2012-14) in both assists and points.
At the collegiate level with the Redhawks, the 23-year-old competed in 159 games and racked up 46 goals and 123 assists for 169 points (1.06 points per game average). Czarnik was named a Hobey Baker finalist in 2012-13 and served as team captain for his junior and senior campaigns.
The Washington, Michigan native signed an entry-level contract with the Bruins on April 1, 2015.