Bowling, one of the most stylish sports around.
The nice people at Bowling Concepts have loads of great retro styled bowling shirts for sale on-line.
Lots of options for embroidery, front and back. Choose font and location, and if you're bold get one of the nifty back designs as well. If you feel the options are overwhelming, many of their shirts are pretty darn purdy just the way they are.
Thanks to Dave for the tip off!