Klefbom was a first round selection, 19th overall, by the Oilers back in 2011, and appeared, at the time, to be an impact defenseman and the future of the blueline in Edmonton. Unfortunately, things didn't go as planned for Klefbom and the Oilers as a serious issue with his shoulder has resulted in a premature end to his pro hockey career.
Klefbom officially announced his retirement this week, four years after playing his final game, back during the 2019-20 season.
The Karlstad, Sweden native had played just 378 career NHL games, producing 34 goals and 156 points during his very brief NHL career, which spanned parts of 7 seasons.
Obviously, this is a tough pill to swallow for Klefbom, and the Oilers as well, I'm sure.