Lafferty scored a goal on two shots in Thursday's 6-1 win over the Rangers.
Lafferty has no points through his first 10 appearances of the season.
Lafferty signed a two-year, $4 million contract with the Sabres on Monday, per Elliotte Friedman of Sportsnet.
Lafferty scored the only goal in Saturday's 1-0 win over the Sabres.
Lafferty posted an assist and two hits in Wednesday's 5-2 loss to the Avalanche.
Lafferty picked up an assist during Thursday's loss to Calgary.
Lafferty was dealt to the Canucks on Sunday in exchange for a fifth-round pick.
Lafferty, who auditioned early in camp on a line with John Tavares, is on the bubble for a roster spot because of his $1.15 million salary, reports The Athletic.
Lafferty (personal) is expected to be back at practice Sunday, Mark Masters of TSN reports.
Lafferty (personal) won't dress Thursday versus the Rangers, Mark Masters of TSN reports.