With Keith now gone, though, two players who were also a part of those three Stanley Cup championships remain: forward Patrick Kane and center Jonathan Toews, who announced June 30 he plans to play next season after missing this season with what he called chronic immune response syndrome.
"As players, we were lucky to have 'Duncs,'" said forward Patrick Sharp, who played 11 seasons in Chicago with Keith. "He's a warrior that should go down as one of the greatest Blackhawks of all time. He had a huge impact on the success of those great Hawks teams."
Since making his NHL debut in 2005, Keith averaged 24:56 of ice time per game, fourth among active defenseman, behind Drew Doughty of the Los Angeles Kings (26:16), Erik Karlsson of the San Jose Sharks (25:36) and Ryan Suter of the Minnesota Wild (25:02). He has proven to be a stalwart on both sides of the ice, averaging 2:31 per game on the power play and 2:56 per game on the penalty kill.
"Stylewise, Duncs' hockey IQ and play recognition, I mean he's shut down more plays in the neutral zone than any defenseman I've seen," Olczyk said. "I mean, I'd be hard pressed to go back to the days of playing against a guy like Ray Bourque, somewhere of that ilk of reading and reacting. You have a couple of options when you get the puck and all of a sudden there's Duncan Keith and all of a sudden you have zero options. He's shut down more plays in between the two blue lines than any defenseman I've seen in a long, long time."
Keith has been on Chicago's top defense pair for many years, and over the past three seasons, his partners have included Connor Murphy, Adam Boqvist, Erik Gustafsson and Henri Jokiharju. However, he will be remembered as playing most of his career with the Blackhawks with Brent Seabrook, who announced March 5 that he could no longer play due to a hip injury.
Although no defenseman is going to completely replace Keith, the question of who takes his spot on the top pair looms. Murphy has played on the left side some and could move to that side again. Other left-shot options include Calvin de Haan, Riley Stillman and Nikita Zadorov, who is a pending restricted free agent.
Where Keith fits into the lineup for the Oilers also remains to be seen, but his leadership, talent, durability and championship pedigree will be greatly missed by Chicago.
"Look, this franchise has had some great defensemen. Chris Chelios was here, Doug Wilson was here, if you want to go back to Pierre Pilote and guys like that," Olczyk said. "You can certainly make a case that Duncan Keith's the greatest defenseman ever to play for the Chicago Blackhawks, and that's saying something."