Breakout seasons in baseball come in all shapes and sizes, and they don't really care about age or experience. Things click for different players at different times, whether it be a twenty-something getting his first chance at regular playing time or a career journeyman that may have finally found a home.
But not every breakout season is created equal. Some lead to a long period of sustained success and stardom while others prove to be nothing more than blips on the radar, creating those one-year wonders that, while memorable, become irrelevant before too long.
Five players are coming off seasons that need to be more closely scrutinized.