Theodore signed a seven-year, $52 million contract extension with the Golden Knights on Thursday.
Theodore (illness) took part in Wednesday's optional skate and is expected to play Friday versus Ottawa, per Danny Webster of the Las Vegas Review-Journal.
Theodore registered three assists in Wednesday's 8-4 win over Colorado.
Theodore scored a goal on three shots and blocked two shots in Tuesday's 5-4 overtime loss to the Predators.
Theodore notched an assist and two blocked shots in Sunday's 3-1 win over the Devils.
Theodore notched an assist in Thursday's 5-4 loss to the Bruins.
Theodore logged two assists in Saturday's 4-3 shootout loss to the Senators.
Theodore will be in action against the Predators on Tuesday.
Theodore (upper body) is not expected to play Monday against San Jose, per Jesse Granger of The Athletic.
Theodore (upper body) was activated from long-term injured reserve Monday, per the NHL media site.