CLIFTON PARK, N.Y. — Shenendehowa varsity softball head coach Chris Farquharson lives a double life. Off the field, he’s strictly a father to his twin daughters, Hailey and Quinn Farquharson. It’s a different story on the diamond. “He’s not really our dad on the field,” Quinn said with a laugh. “He’s definitely a different person.” That’s been the standard for the Farquharson family for more than three years. Since joining the varsity squad for …