Dubinsky had a procedure on his ankle this morning, general manager Jarmo Kekalainen said. Kekalainen wouldn't reveal any specifics of the surgery, except to say that it "wasn't structural."
MacKenzie had right shoulder surgery on Tuesday, he said, "just a scope to clean up some stuff in there." He stopped by the rink today with his arm in a sling.
Both players are expected to be ready long before training camp in September.
MacKenzie is an unrestricted free agent as of July 1, but all signs point to him being re-signed by the Blue Jackets.