Joe Frisaro of MLB.com answers a question from his mailbag. I never understood why the Marlins wear black jerseys during hot day games. It seems that the black attracts the heat, and the players would be more comfortable wearing white jerseys. -- Sandra P., Kissimmee, Fla. In talking to some players, they say the black jerseys actually are more comfortable on those hot day games because of the material. The team's home white uniforms are made of a heavier material, while the black...