Ballard is still experiencing concussion symptoms and is weighing retirement, the St. Paul Pioneer Press reports. "But knowing what we know about concussions, I have to think about the long term," Ballard said. Ballard suffered a concussion and multiple facial fractures after taking a hit to the boards on Dec. 9. It was his third concussion in 14 months and fifth in five years and he was convulsing on the ice afterwards. It doesn't sound like he'll return this season and his career may be over.