Posted in: CBS, Heritage Sponsored, TV | Tagged: charlie brown, heritage, peanuts, snoopy, sponsored, You're A Good Sport Snoopy in his tennis outfit was quite the look, and now fans of Peanuts can head over to the auction website Heritage to bid on a production cel from the special featuring Snoopy in this athletic gear holding the tennis racket that he would later break in frustration after being defeated by Woodstock. Fans of Charles Schulz's iconic Peanuts can now head over to Heritage Auctions, where the listing for this production cel is live.