Jenner had surgery on his broken hand Tuesday and is expected to miss approximately five weeks, the Blue Jackets' official site reports. Last year, Jenner had a successful rookie season notching 16 goals and 29 points and was expected to be a top-six forward with Columbus this season. Columbus is going to struggle offensively to start the season with Jenner's absence, Nathan Horton's back problems, and Ryan Johansen's contract dispute, but when Jenner returns, he should be able to contribute.