Items you will need
Whether the party is a Little League birthday party or a grown-up World Series party, having a baseball-themed party will begin with the invitations. The invitation, along with explaining the pertinent party information, such as the what, where and when, should also alert guests to the exact theme you have planned.
Wording the Invite
Choose the format for the invitation. This could affect the tone and wording of the invitation itself. A baseball-game-ticket format would fit well with wording as to place, time and admission. If you are highlighting your home team in the World Series, you may use the team colors.
Begin the invitation by welcoming the guests to join you for the party while letting them know immediately that this will be a baseball party. For example, for a specific event like the World Series, open with, "Come join us watch the Sox become World Series champs!" For a general party theme try, "Come to bat for a birthday party on May 1 for a home run of a good time!"
Invite guests to come dressed in baseball attire, if desired. The invitation should say: "We invite you to show your passion for baseball by dressing as your favorite player."
Make the details of the party clear. For example, "Game time is at 7 p.m. and is expected to last until midnight. In addition to peanuts and Cracker Jacks, refreshments will be served." Also add, "R.S.V.P. by April 20 or YOU'RE OUT!"
Close with a baseball-inspired quote. For example, try this quote by Baseball Hall of Famer, Rogers Hornsby; "People ask me what I do in winter when there's no baseball. I'll tell you what I do. I stare out the window and wait for spring"