| 1 | Baseball first became a professional sport in . | |
| 2 | The National Association of Baseball Players was established in
. | |
| 3 | In 1903, a competition to find the best baseball team in North America began called the . | |
| 4 | A baseball team usually has players. | |
| 5 | A pitcher normally tries to pitch the ball into the . | |
| 6 | A batter is out if the umpire calls strikes. | |
| 7 | A baseball diamond has bases. | |
| 8 | In professional baseball, bats must be made of . | |
| 9 | A batter "walks" if the pitcher throws balls outside the strike zone. | |
| 10 | A game of baseball is usually played over innings. | |
