When the Edmonton Oilers selected Klefbom with the No. 19 pick in the 2011 NHL Draft, they had every reason to believe he would become a cornerstone of their defense.

They drafted a big, strong, smooth-skating defenseman who could move the puck and be a physical presence. Though Klefbom had a setback in Sweden, a shoulder injury that required season-ending surgery in 2013, he had come back without incident.

The 6-foot-3, 216-pound native of Karlstad, Sweden, polished his all-around game in his native country, playing three seasons with Farjestads BK, his hometown team in the Swedish Elite League.

He was a force for Sweden's national junior team, helping his home country win the 2012 IIHF World Junior Championship and being selected as a First Team All-Star defenseman.

Klefbom played his first pro season (2013-14) for Oklahoma City in the American Hockey League and had a 17-game stint with Edmonton to close out the season. Those games not only included his NHL debut against the Minnesota Wild on March 11, 2014, but his first NHL goal against the Anaheim Ducks on March 28, 2014.

He started the 2014-15 season with Oklahoma City and scored eight points in his first nine games before being called up again. He played 60 games with the Oilers and scored two goals and 20 points.

On Sept. 20, 2015, Klefbom signed a seven-year contract with the Oilers. He scored his first Stanley Cup Playoff goal and the Oilers' first postseason goal in 11 years against the San Jose Sharks in Game 1 of the Western Conference First Round, which Edmonton won in six games.