Reno, Nevada Wins D3 Championships The Omaha Shamrocks play in the Great Plains Union which is in the Western TU. The Shamrocks must win the division to play in the Western TU where they will play against other division winners all the way to the National Title. Our season begins September 13th against Sioux Falls in Omaha @ Storz rugby Complex. Kickoff is at 1pm. Join our mailing list and get the latest information on games, stats, players and more. Become a Shamrock and tailgate to all the home games. SHAMROCKS! UNITED! WILL NEVER BE DEFEATED!