The moves allowed the Blue Jackets to get down to the 23-man limit for their opener at Nashville on Saturday night.
The 19-year-old Jenner is the club's second-round pick in the 2011 draft who has put up big numbers with Oshawa of the Ontario Hockey League.
The 21-year-old Erixon played mostly in the AHL a year ago and sparingly with the New York Rangers. He was acquired in July along with forwards Brandon Dubinsky and Artem Anisimov and a first-round pick for Rick Nash, minor-league defenceman Steve Delisle and a conditional third-round pick in the draft.
It seems like I'm kind of making it a little difficult on myself here the last two games.
— Chicago Blackhawks forward Patrick Kane after tying the record for longest point streak by an American-born player with an assist on Duncan Keith's goal with 26.6 seconds left against the Anaheim Ducks Friday
TONIGHT ON NHL NETWORK
6:30 ET: Hockey Central Saturday: Hockey Tonight 7:00 ET: NHL Hockey: WSH @ TOR (Live) 10:00 ET: NHL Tonight