We have been playing softball, bowling and mini golf in the Underdog leagues for three years. Their leagues (softball, bowling, golf, soccer, flag football, kickball, volleyball, more!) are very well run and feature a lot of fun people. If you are new to Seattle, this is a great way to meet a lot of good folks. The umpires and sport supervisors are professional and courteous. The leagues are a little on the pricey side, but if you can find a local bar to sponsor you, then it's just that much better!