And the key to Thornton is Marleau.
Thornton has played the past 11-plus seasons for the Sharks, since the Boston Bruins traded him to San Jose on Nov. 30, 2005, while he was on his way to winning the Hart Trophy as the NHL's most valuable player. Marleau has spent his entire 19-season NHL career with the Sharks, who selected him No. 2 in the 1997 NHL Draft.
In Sharks history, Marleau ranks first in regular-season games played at 1,493, Thornton second at 914. Marleau ranks first in goals at 508, Thornton first in assists at 722. Marleau ranks first in points at 1,082, Thornton second at 937.
Thornton waited for Marleau so they could announce nearly identical three-year contracts together on Jan. 24, 2014. After the Sharks blew a 3-0 series lead and lost to the Los Angeles Kings in the first round later that year, Wilson talked about rebuilding and openly wondered whether some veterans would want to stay. Thornton lost his captaincy. Still, Thornton and Marleau never asked to be traded.
"I still believe in this team, ultimately," Thornton said during training camp before the 2014-15 season. "If I didn't, I think …"
Pause.
"You know, that's the easy way out, just pack your bag and leave. I still believe this team can do some things."
The Sharks made their first Stanley Cup Final in 2016.
Thornton went from 82 points (19 goals, 63 assists) in 82 games in 2015-16 to 50 points (seven goals, 43 assists) in 79 games in 2016-17. But that was after a short summer and the World Cup of Hockey 2016. He played four games in the Stanley Cup Playoffs on a badly injured knee that needed surgery, even though he was set to become a free agent. He should bounce back with a summer of rest and rehab.