The Pittsburgh Pirates will be wearing turn back the clock or "throwback" uniforms this weekend.  The franchise, one of the oldest in major league baseball could have used any style from their 122-year history, but wanted to really make a mark this year." We wanted to go with a style that represents not only our past, but the vision we have for our future," stated Pirates owner Robert Nutting. What doesn't say modern day Pirates than the Montreal Expos?