Zegras scooped the puck onto the blade of his stick behind the net and lobbed it over goalie Ukko-Pekka Luukkonen's head. Sonny Milano was waiting on the right edge of the crease and batted the feed past Luukkonen's glove for his eighth goal 5:14 into the second period.
Zegras leads rookies with 16 assists. The 20-year-old was drafted ninth overall in 2019 by the Ducks and has eight assists in four December games, most in the league for the month.
Sam Carrick also scored for Anaheim, which extended its point streak to five games (3-0-2), responding from a 4-3 shootout loss in Washington on Monday. They won on the second night of a back-to-back set opening their five-game Eastern road trip.
Luukkonen stopped 21 shots in his season debut for the Sabres. Buffalo has lost five in a row and fell to 1-8-1 over its past 10 games.
Carrick deflected in Josh Manson’s shot from the point for the Ducks’ second goal with 2:08 left in the third period.
Stolarz made 15 saves in the final period to preserve his second shutout in three starts and fourth straight win.
Sabres: C Casey Mittelstadt went to the the dressing room in the third period and did not return. Mittelstadt missed 20 games this season with an upper-body injury. ... Luukkonen was called up from the from the minors after recently acquired G Malcolm Subban sustained a lower-body injury during Saturday night’s loss at Carolina. Luukkonen was the fifth goalie to start for Buffalo. Subban skated on Tuesday. ... D Robert Hagg missed his second game with an undisclosed injury.
Ducks: At Columbus on Thursday.
Sabres: Host New York Rangers on Friday.