Oesterle will draw into the Blackhawks lineup on Sunday.
Oesterle, 24, has registered three goals on 15 assists (18 points) in 24 games with Bakersfield this season, but has not appeared in a game with the Oilers. The Michigan native has six assists in 23 career NHL games.
Oesterle, 22, had one assist in six games with the Oilers during his call-up. His return to the AHL suggests that Nikita Nikitin could be back in the lineup on Thursday in Pittsburgh. Oesterle heads back to the AHL where he has 21 points (6G / 15A) in 49 games on the Oklahoma City blue line.