Arroyo Parks and Tennis Courts 35199 Perry Rd, Union City, CA94587 Located in a residential area off of Perry Road, Arroyo Park offers a variety of activities including tennis, baseball,…More basketball, soccer and more. The tennis court area (there are four tennis courts) is located at the south end area of Arroyo Park. You will also find a playground and plenty of picnic tables. The park has two main picnic sites: Arroyo and Perry, which both seat around 16 to 25 people and can be reserved. Arroyo Park runs along the Alameda Creek and is open Sunday through Saturday, 6am to 10pm.