Brady Tkachuk, F: At 6-foot-3, 196 pounds, he has a physique like his father, former NHL forward Keith Tkachuk, and is fearless like his brother, Calgary Flames forward Matthew Tkachuk. Brady, who turns 19 on Sept. 16, had 31 points (eight goals, 23 assists) in 40 games as a freshman at BU last season. … Christian Wolanin, D: After finishing his junior season at the University of North Dakota, Wolanin signed a two-year, entry-level contract with the Senators on March 21 and had three points (one goal, two assists) and was minus-4 in 10 NHL games. He showed poise in his zone and confidence with the puck on offense. The 23-year-old will be given an opportunity to play significant minutes with Ottawa this season. ... Colin White, F: The 21-year-old played most of 2017-18 with Belleville in the American Hockey League, but with a lack of depth at center in Ottawa, he's a candidate for a full-time role in the NHL this season. White, who was selected by the Senators in the first round (No. 21) of the 2015 NHL Draft, has proven to be a reliable defensive forward but needs to show he can produce offensively. He had 27 points (11 goals, 16 assists) in 47 games with Belleville last season and has six points (two goals, four assists) in 23 NHL games.