Given the task definition and input, reply with output. In this task, you're given the title of a story consisting of five sentences, numbered 1 through 5. Your job is to determine which two sentences need to be swapped sentences in order to make a story that makes complete sense and is befittingly titled. Indicate your answer using the numbers of the two sentences in order, such as '34' or '25'. The first digit refers to the sentence which should come first in the story.

Title: The Pitch. Sentence 1: Nodding at the sign, he tucked the baseball into his glove. Sentence 2: Timmy looked toward the plate, his eyes on the catcher. Sentence 3: Throwing the pitch, Timmy watched it cut through the air. Sentence 4: The batter swung his bat but the ball landed in the catcher's glove. Sentence 5: Strike three and Timmy jumped into the air celebrating the win.
21