It's thought is that during the opening minutes of the second period, Scheifele had left the bench and went down the tunnel in complete discomfort. Some pointed out that it's a possible groin injury as many saw Mark discussing it with Nino Niederreiter.
If this happens to be the case, this is a huge blow for the Jets as the team continues to ascend into the standings. If he is expected to miss time, their offense will take a hit as he scored 14 goals with 27 assists for 41 points and is a +18 through 40 games.