Barbashev, 27, was acquired by Vegas from St. Louis on February 26 at the 2023 trade deadline. The forward appeared in 23 NHL games with Vegas during the 2022-23 regular season, recording 16 points (6G, 10A). During the Golden Knights 2023 Stanley Cup Championship run, Barbashev finished fifth in scoring for Vegas and tied for eighth in the NHL, posting 18 points (7G, 11A) in 22 games to help the club raise its first Stanley Cup. Barbashev's +14 rating trailed only linemate Jonathan Marchessault among all playoff players and he was plus or even in 21 of 22 games. His 64 hits in the playoffs were second on the team and sixth in the NHL.