Miami Marlins outfielder Logan Morrison spends the morning of Valentine's Day 2012 at the nearly empty Roger Dean Stadium in Jupiter, the team's spring facility. He hits balls in a cage, sweats on a stationary bike, and works on stretching and strengthening his right knee. Morrison — who has been called stubborn, juvenile, and impatient but never lazy — underwent minor surgery on the knee in December, the result of a 2011 baseball season spent diving and slamming... More >>>