Coming up this Sunday,Screech and his friends, the Nationals, are in town for one of their kid-friendly Sunday afternoon games.

Washington Nationals starting pitcher Jason Marquis. (RAY STUBBLEBINE/REUTERS)

• Children under 3 are free. Because toddlers don’t get an assigned seat, they’re supposed to sit on an adult’s lap. But just as it’s unlikely that your toddler will sit on your lap for the duration of the game, it’s also unlikely the Nats will sell out.

• The best deal: The $14 ticket, called the “family fun pack.” With the ticket comes a voucher for a hot dog, chips and a drink. It’s available for every weekend home game. In previous seasons, this deal was limited to Sunday.

• There’s a playground in the ballpark designed for ages 3 to 8. It’s first-come first-serve and sometimes fills to capacity during especially popular games.

• Strollers and food can be brought into the stadium, with some restrictions. Check out for details.

• Immediately after every Sunday game, the team invites kids ages 4 to 12 to run the bases. The running begins about 20 minutes after the game ends, but many eager families begin lining up after the seventh inning. If you wait until the end of the game, the line can be loooong. To line up, leave the park through the Right Field Gate. The line forms outside of the park on the sidewalk along First St. SE.

One more thing: Stay away from Philly games. Sorry, but Philly fans and innocent children do not always mix. Anybody remember this story from last year?

No worries this weekend. The Nats are hosting the San Francisco Giants.