Hennessy replaces Antoine Vermette, who is day-to-day with a hip injury. It's the fourth recall of the season for Hennessy. In eight games with Ottawa, he has one goal and two penalty minutes.
The 21-year-old native of Brockton, Mass., is third in team scoring for the AHL's Binghamton Senators with 12 goals and 14 assists. He also has 30 penalty minutes in 33 games.