May 11-12 – USA Softball Hall of Fame –
From big12sports.com: Welcome to the Phillips 66 Big 12 Softball Championship! The Big 12 Softball Championship will return again in 2018 with pool play for the top six teams and will be contested at the USA Softball Hall of Fame Stadium Complex. Don’t miss out on the action! Games run throughout the day May 11-12. For tickets and a full schedule, click here.