The 6-foot-5, 230-pound Zadorov, who was in the lineup Saturday night when the Sabres hosted Colorado, can play up to nine games with Buffalo before the team must decide whether to activate the first year of his entry-level contract or return him to London of the OHL.
Ristolainen was sent down to make room for Zadorov. The Sabers selected Ristolainen with the No. 8 pick in the NHL draft in June and then took Zadorov eight picks later.
After being through it and seeing the other [outdoor] games on TV, just the atmosphere is spectacular. To stand here -- and we are essentially almost on the blue line -- and look up [into the stands] and knowing it is going to be packed and playing our biggest rival in this setting is going to be pretty special.
— Bruins president Cam Neely on the 2016 Bridgestone NHL Winter Classic between Boston and Montreal at Gillette Stadium on
Jan. 1, 2016