So even though I didn't know how to play, I figured I could be the ninth man and maybe just stand in the outfield somewhere and take up space.

9 seconds sound clip from the The Sandlot (1993) movie soundboard.

You can hear this line at 00:06:07 in the Blu-ray version of the movie.

Quote context

[...]

- And all I had was a plastic toy mitt that my grandmother gave me for my birthday when I was six.

- But when I finally got up enough guts to go out there and try and make friends...

- I found out that they never kept score, they never chose sides, they never even really stopped playing the game. It just went on forever.

- Every day they picked up where they left off the day before. It was like an endless dream game.

- There was only eight of them, so they didn't have a whole team.

- So even though I didn't know how to play, I figured I could be the ninth man and maybe just stand in the outfield somewhere and take up space.

- Of course, if I'd have known what was gonna happen when I got there, I probably never would've gone.

- Nice catch.

- Yeah.

- Come on, Benny, hit a homer! Come on!

- Hey, batter, batter, batter!

[...]