The Frederick Keys (tel. 877/8GO-KEYS [846-5397];, an Orioles farm team and the 2007 Carolina League champions, play at Harry Grove Stadium, off I-70, from May to early September. General admission is $5 to $11.

Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.