Thompson, Tuch help Sabres outlast Ovechkin, Capitals with 8-5 win
Ryan McLeod, Sam Lafferty, Jack Quinn and Peyton Krebs also scored for the Sabres, winners of four of the last five.
Ryan McLeod, Sam Lafferty, Jack Quinn and Peyton Krebs also scored for the Sabres, winners of four of the last five.
Jack Quinn scored twice, and Alex Tuch and John-Jason Peterkaas added goals as the Sabres had their three-game winning streak halted.
Buffalo won its fourth-straight home game with Tage Thompson, Alex Tuch, Peyton Krebs, Tyson Kozak each securing a goal and assist.
Tyler Kopff is a 21-year-old who signed a two-year entry-level contract fresh off his sophomore season at Brown University.
Weighing heavily on Ruff in the closing weeks of his first season back in Buffalo was the disappointment of falling well short of his objective.
The Sabres continue their role as playoff spoilers two days after a 5-3 win at the Western Conference-leading Winnipeg Jets.
Cozens was traded to the Senators earlier this month.
The roster of the Rochester Americans is comprised of players from around the globe, including a Swedish former first round pick, Erik Brännström.
JJ Peterka scored and Ukko-Pekka Luukkonen stopped 17 shots for Buffalo, which lost its second straight game and is 3-8-1 in its past 12 outings.
JJ Peterka scored for the Sabres in his return to the lineup after missing three games, Ryan McLeod also scored and James Reimer had 27 saves.