It’s only the preseason, of course, but there’s plenty to look for in tonight’s exhibition opener against the Devils at the Garden. Both Marián Gáborík and Ilya Kovalchuk will skate tonight, though Gáborík’s linemates are perhaps more worth your preseason attention: Derek Stepan, the Rangers’ second-round pick in 2007 who’ll be given a real chance to make the team, will center the top line, while newcomer Alexander Frolov will skate on the left side. (Stepan’s former University of Wisconsin teammate Ryan McDonagh will be paired with Michal Rozsíval on defense, at least according to Steve Zipay’s line projections.) Others donning a Rangers jersey for the first time include Mats Zuccarello Aasen (the Hobbit Wizard!), Tim Kennedy, Martin Biron (who will start in goal), Derek Boogaard, and Ruslan Fedotenko. Regulars sitting this one out include Henrik Lundqvist, Ryan Callahan, Vinny Prospal, and Sean Avery.