Monday was no different. Coach Sheldon Keefe skated his team hard and did not allow them to touch a puck for the first 20 minutes of practice. Afterward, he praised Thornton for being the consummate professional, all the while wearing his trademark grin.
"It was a really difficult for our guys at training camp, we demanded a lot of our group," Keefe said. "Joe worked extremely hard, pushed himself extremely hard on the ice. On the ice, still maintained his smile. Off the ice he was still smiling, happy and excited for the next day.
"We really think that brings a lot of value to our team and we saw a lot of benefits from that today."
Keefe said the idea of moving Thornton from his natural center position to left wing on a line with Matthews and Mitchell Marner first came to him when Thornton began showing interest in joining the Maple Leafs. Thornton played left wing for HC Davos in Switzerland's National League in the fall.
Los Angeles Kings coach Todd McLellan, who coached Thornton from 2008-15 with the Sharks, said he'll be an outstanding mentor for Matthews and Marner.
"I think it's great. It's great for those two kids to have Jumbo on their line," McLellan said. "He's such a good player, he's going to be so good for those young players, and he's going to drive them.
"He'll make those two better as overall players. Jumbo will have fun doing that, and they'll enjoy having him there."
NHL.com staff writer Tracey Myers contributed to this report / Photo credit: Kyle Brown, Toronto Maple Leafs