Silver Seven, an Ottawa Senators community

A look at Jean-Gabriel Pageau, who slots in at 21 on the Ottawa Senators' top 25 players under 25 years of age.

Perhaps the most controversial placement in this year's Ottawa Senators top 25 players under 25 years old: Nikita Filatov, whose uncertainty drops him all the way down to number 22.

Derek Grant has decent size and decent hands. Can he turn those assets into an NHL career?

Kicking off a new series looking at the top 25 players under the age of 25 in the Ottawa Senators system. First up: Jim O'Brien.