Tomas Hertl left Sharks practice this morning according to...well, take your pick. He started practice in a track suit, which I think got Evander Kane in trouble last season, and then left the ice shortly after that first tweet was sent.
Johnston later reported Melker Karlsson skated in Hertl's place on the Joe Thornton and Joe Pavelski line. Losing Hertl would leave an enormous hole in the Sharks' lineup — one that drawing Dainius Zubrus back in to the fold wouldn't come close to filling.
I'll update this post when we get more information, but for now.