Pittsburgh Penguins defenseman Cody Ceci (4) and defenseman Marcus Pettersson (28) battle for position with Washington Capitals right wing Tom Wilson (43) during the second period of an NHL hockey game, Thursday, Feb. 25, 2021, in Washington. (AP Photo/Nick Wass)

Seth Rorabaugh gives his opinions on what may be the biggest stumbling block for each East Division team. We look at the depth challenges facing the Penguins. And we plunge further into the problems facing the Buffalo Sabres as they come to PPG Paints Arena for games on Wednesday and Thursday.