Here is how Swackhammer knew about DT and Silver Spoon, Game 4 and Headliners vs Fur Power goes in The Headliners.
Mr. Swackhammer: This is ridiculous! How're the Headliners keep on winning?
Flim: They kept on winning like never before!
Flam: No doubt they'd never give up!
Squilliam Fancyson: They must have a weak spot!
Rinkus: Mr. Swackhammer! You're not going to believe this!
Sierra: We heard tell that Diamond Tiara and Silver Spoon were once bullies to the Cutie Mark Crusaders during their filly-hood.
Mr. Swackhammer: I knew it. I have an idea! But we must wait until after the Semi-Finals! We'll show them!
Meanwhile, at Sponge-Bus RV-Pants.
SpongeBob SquarePants: We're here!
Squidward Tentacles: New York City!
Princess Sharon: The Big Apple itself!
Princess Yuna: The old home of Alex, Marty, Gloria and Melman.
Snowdrop: Is this where we go up against Alex's team?
Turbo: I think so.
Skipper: Are you up for it, Orlean?
Orlean: More than ready, Skipper.
The Game 4 is on.
Perch Perkins: Perch Perkins here with GIR, Welcome to New York City for Game 4! Headliners baseball is on the Internet.
GIR: If it's the Big Apple, How come there's no Big Apple!?
Perch Perkins: Silly GIR. Silly, silly GIR.
Princess Yuna: Good luck at the game, Alex.
Alex: You too, Yuna.
Perch Perkins: And here's the pitch.
Snowdrop: (hits the ball)
Perch Perkins: It's a high fly ball!
Nyx: (caught the ball) I caught it!
Perch Perkins: Bad news, The headliners are behind, 2-0! Patrick is up. Skyla's on third.
Patrick Star: I'm gonna knock on out of the Park! (hits the ball on a home run)
Perch Perkins: He smacked that one! This game is all tied up!
Later, the Headliners won again.
Perch Perkins: That was close! Headliners, 3-2! New York Glass is shattered!
GIR: The crowd is Wild!
Perch Perkins: You maybe right about that one, GIR
GIR: I like fish!
That night at the Sponge-Bus RV-Pants.
Scrooge McDuck: Alright, Wee ones. Lights out. The Semi-Finals at Monstropolis starts tomorrow.
Princess Yuna: (wearing the deep blue nightgown) We're ready, Mr.McDuck
Snowdrop: (brushing her teeth with her favorite toothpaste, and prepared for bed) I can hardly wait.
Scrooge McDuck: Good night, Wee ones.
Princess Skyla: Good night.
Zeñorita Cebra: Buenas Noches.
Nyx: Good night
Princess Twila: Night.
Princess Yuna: QUIET!
Princess Sharon: Good night, Everypony.
The foals went to sleep in their own hot water and trampoline beds.