As Connolly fell in the left circle in Buffalo's end, the
41-year-old Roberts went down with him and struck his left leg hard
on the ice, breaking his fibula.
A stretcher was brought out but Roberts did not use it.
The Penguins are uncertain how long Roberts will be out.
"The young players in our lineup will have to compensate for
the leadership that we won't have from Gary Roberts, and we don't
know for how long," Penguins coach Michel Therrien said after the game.
Roberts, who re-signed with Pittsburgh after playing a key role
in the Penguins' playoff drive last season, was honored before the
game for recently scoring his 900th career point. Roberts has three
goals and 12 assists in 37 games this season.
Roberts, a left wing who broke into the NHL with Calgary during
the 1986-87 season, has 434 goals and 469 assists for 903 points in
1,192 career games.
Information from The Associated Press was used in this report.