The numbers simply don’t add up. You certainly don’t have to tell Josh Leivo how tough it’s going to be to carve out a regular role with the team. The 24-year-old winger was caught in lineup limbo all of last season, dressing for just 18 games despite producing whenever he played, and has arrived at this camp hellbent on changing his fate. “I’m working as hard as I can to keep a job,” Leivo said Friday after Toronto’s 3-0 exhibition win over Buffalo. “There’s not too many spots, as you can see, on this team any more. Maybe a couple years ago it might have been a little easier. “Now it’s a bunch of young guys who have a lot of skill and I’ve got to do everything I can to crack that squad.” His situation offers a reminder of how much context matters in hockey. You must consider how a player is used, and what opportunities he’s given, when gauging individual success.