"Definitely adding those two guys (Scandella and Beaulieu) and the depth we have back there, I think it's going to be important we have the depth," Housley said. "Knock on wood; we don't have those injuries, because in an 82-game schedule there's going to be injuries. I really like the depth of what we have right now."
The addition of Scandella, 27, gives the Sabres a left-handed defenseman who can pair with Ristolainen.
"[Scandella]'s a fierce competitor," Housley said. "He was playing behind some guys [in Minnesota] and he wanted more minutes and he wanted a new opportunity, and luckily for us, we got him. The way he can skate, he's mobile, that's going to be a big part of our team is mobility back there, and he brings that."
An improved defense should help goalie Robin Lehner improve on a strong season. Lehner had a .920 save percentage, played an NHL career-high 59 games (58 starts) and had two shutouts. Lehner, a restricted free agent, signed a one-year contract worth $4 million on July 25.
Buffalo also signed forwards Benoit Pouliot and Jacob Josefson, and goalie Chad Johnson, who played for them in 2015-16 and spent last season with the Calgary Flames, each to a one-year contract.
"We were really excited to make a couple of trades there, and some of the players we were able to get on July 1 from a depth standpoint for our organization," said Botterill, who was hired May 11. "My guess is things will heat up a little bit more come fall time and we'll see how our players perform in rookie tournaments and main camps. We're also in a situation where we could have some NHL contracts still available. We still have [salary] cap space available (about $8.5 million, according to CapFriendly.com), so we'll certainly be looking out for our team."
Even though those additions will make the Sabres deeper, the core is in place for success if it can avoid injuries. Center Jack Eichel, who missed the first 21 games of the season with a high ankle sprain, had 57 points (24 goals, 33 assists) in 61 games and led them in scoring. Center Ryan O'Reilly, who missed 10 games, had 55 points (20 goals, 35 assists) and was their most effective two-way player. Wing Evander Kane missed 12 games but led them with 28 goals.