Alexyev tallied an assist and blocked three shots while logging 15:14 of ice time during Thursday's 6-0 win over the Penguins.
Alexeyev tallied a goal and added two shots while logging 10:55 of ice time in Wednesday's 4-3 overtime win against the Sabres.
Alexeyev signed a two-year, $1.65 million extension with the Capitals on Monday, Elliotte Friedman of Sportsnet reports.
Alexeyev recorded an assist in Friday's 5-2 loss to the Blues.
Alexeyev (upper body) isn't expected to play Thursday versus Ottawa, according to Mike Vogel of the Capitals' official site.
Alexeyev (upper body) is expected to be activated off injured reserve ahead of Thursday's game versus Ottawa, George Richards of Florida Hockey Now reports.
Alexeyev (upper body) was put on injured reserve Sunday, per the NHL media site.
Alexeyev won't return to Friday's game against Seattle because of an upper-body injury.
Alexeyev (shoulder) will be activated off injured reserve and make his season debut Wednesday against the Penguins, Samantha Pell of The Washington Post reports.
Alexeyev (shoulder) completed his AHL conditioning loan.