Leafs sign former Rangers enforcer Orr (AP)

The Toronto Maple Leafs are bringing some much needed muscle into their lineup with the signing of former New York Rangers enforcer Colton Orr. The Maple Leafs and Orr agreed to terms on a four-year deal Wednesday shortly after the NHL's free-agent shopping season began at noon. Toronto general manager Brian Burke has repeatedly said since he took over last season that it was his intent to make…