Lightning's Jonne Tammela: Suffering from undisclosed ailment

Tammela will miss Lightning training camp due to an undisclosed injury and could be sidelined beyond the start of the season in juniors, Lightning Insider's Erik Erlendsson reports.

Tammela -- who was selected in the fourth round of the 2015 NHL Draft -- will likely return to OHL Peterborough, where he logged a pair of outings last season, rather than suiting up in Europe.