Defenceman Andrej Sekera said returning halfway through the season after major knee surgery is “like trying to catch up to a train that’s left the station,” so maybe it’s best to judge the real Sekera next fall when training camp starts. He’s predictably struggled with the pace of the game and decision making after his knee ligaments were repaired, ending up a plus player just once in the 13 games he’s played. “It’s hard for Andrej. Everybody’s 45-46 games into the season and they’re up and running with their sense of timing,” said Oilers coach Todd McLellan. “He’s come back in at a difficult time and it’s hard to regain all that lost training camp, pre-season, regular-season time and be the player you were. Especially with his injury. “I look at Joe Thornton (torn ACL and MCL against the Oilers in the 2017 playoffs) and he had the opportunity to heal quickly enough to be involved in training camp,” said McLellan, obviously aware Jumbo Joe just damaged the medial collateral ligaments in his other knee and is out weeks after earning 26 points in his last 28 games with the Sharks. “Andrej had to sit for two-thirds of the season because you throw camp in there, all that prep time. It’s affected him.