Round Rock Express vs. Tacoma Rainiers is a Triple-A baseball matchup at Dell Diamond in Round Rock, just outside Austin. Dell Diamond is a classic ballpark with a friendly, lively feel, perfect for a summer night out at the game. Grab a seat, cheer on the home team and soak in the crack of the bat and the buzz of the crowd. Baseball fans, families and anyone looking for a fun night out will love it. Bring a hat, some sunscreen and your best ballpark energy.