Former Philadelphia Union captain, Danny Califf was injured by an exploding e-cigarette in February, according to a story from KTLA Los Angeles (warning, the pictures in the link are graphic). According to the report, the 35 year old Califf was " left a hole in his left cheek and second degree burns across his left face, ear, and neck. He also suffered a broken cheekbone and a concussion." It's unclear from the report exactly what kind of e-cigarette device Califf was using at the time of the explosion. Califf's lawyer is handling two other cases of exploding e-cigarettes in the state of California in 2015 as well.
A fan favorite in Philadelphia, Califf was traded to Chivas USA and eventually Toronto FC before he retired in 2013. He remained connected to the area as a player/coach with Bearfight FC of Wilmington.
Recent social media posts by Califf seem to indicate that he is doing well and in good spirits. The entire Brotherly Game staff wishes Danny well as he continues to recover from this incident.