The Lightning were expected to make a run for the Stanley Cup last season after tying an NHL record with 62 wins but were swept by the Columbus Blue Jackets in the best-of-7 Eastern Conference First Round.
McDonagh said he learned a lot from watching the St. Louis Blues on the way to their first Cup title, particularly how well they worked together, and said it should be a lesson for Tampa Bay.
"I work every day to be as good as I can be, so you try watch and learn and see what it takes," McDonagh said Wednesday during a break at Da Beauty League, a 3-on-3 summer league for NHL players with ties to Minnesota. "The Blues really played as a team, that was the one thing that stood out. Not that we weren't, but we need to be even stronger as a team there. We've got skill, we've got speed, a lot of talent; if we can work as a team, that'd be a nice fourth thing to add to our group.
McDonagh said it took awhile to try to move forward after the Lightning's early exit from the Stanley Cup Playoffs.