TORONTO – Who cares if the assignment meant patrolling his weak side? Lefty Rasmus Sandin, 21, saw his name scribbled to the right of Morgan Rielly on the Toronto Maple Leafs’ top pairing and saw only the benefits. “It’s a huge opportunity for me,” the 21-year-old said. “Our games could fit really well. He’s a guy I’m looking at and trying to take a lot of stuff from. In that way, we can read off each other very well. We’re probably going to know what the other guy will do with the puck and where he’s going to go when he doesn’t have it. It can be a really good pair.” Good? Not yet, certainly. Intriguing? Sure. With lefthanded top-four fixture Jake Muzzin (concussion) sidelined indefinitely and a run of six straight games against non-playoff teams kicking off Toronto’s March schedule, coach Sheldon Keefe has the leeway and the inclination to experiment with his D pairings ahead of the trade deadline. Might as well see what you got, so you can determine what you need. The l...