Annunen stopped 21 of 22 shots in Thursday's 3-1 preseason win over the Golden Knights.
Annunen had his best outing of the preseason in this road win, quieting a group mostly consisting of Vegas' NHL players. The 24-year-old has allowed seven goals on 74 shots across three preseason appearances. This may have been his last action before Opening Night, though the Avalanche will have one more preseason game at Utah on Saturday.