Another Pitcher passes

What's going on here?? Oakland starting pitcher Joe Kennedy collapsed and died late Thursday night at the age of 28. It's odd hearing about this after Cory Lidle died last year. I just find it shocking when young people pass, especially when it is seemingly for no "good reason".
Anyway, Joe Kennedy played for five teams over his short career, with a Win-Loss record of 43-61, an ERA of 4.79 and 558 strikeouts. I think he was always just short of great, and never played for contending teams that could have backed him up better, or provided better run support. We'll never know how great he could have been.