The Major League Baseball playoffs are underway, and it’s time to get your ball cap on. These days, fans can support their team with caps in a variety of colors and fashions.

If you work outside, for instance, as a tennis coach or groundsman, then you almost certainly need to wear one to shield your face from the sun — as the first baseball caps did on the heads of ...

Point your hat in the direction that you are going. Now, if the sun happens to be at one o'clock and you want to maximize the functionality of your bill on a long walk, go for it. Otherwise, noon.

Justin Peterson, a 37-year-old graphic designer who lives in Orlando, Florida, owns nearly 100 baseball caps, including several featuring the familiar “C” logo of the Cincinnati Reds.