MLB Scores and Standings Sunday, April 21, 1963
| Cleveland Indians | 0 | Final |
| Baltimore Orioles | 7 |
| W | Steve Barber (3-1) |
| L | Sam McDowell (1-2) |
| Cleveland Indians | 2 | Final |
| Baltimore Orioles | 0 |
| W | Dick Donovan (1-1) |
| L | Robin Roberts (0-2) |
| Detroit Tigers | 5 | Final |
| Boston Red Sox | 2 |
| W | Hank Aguirre (3-0) |
| L | Bill Monbouquette (1-2) |
| Minnesota Twins | 7 | Final |
| Chicago White Sox | 0 |
| W | Jim Roland (2-0) |
| L | Eddie Fisher (0-3) |
| Minnesota Twins | 0 | Final |
| Chicago White Sox | 8 |
| W | John Buzhardt (1-0) |
| L | Jack Kralick (0-3) |
| Los Angeles Angels | 6 | Final |
| Kansas City Athletics | 2 |
| W | Don Lee (2-0) |
| L | Ted Bowsfield (1-2) |
| S | Jack Spring (1) |
| Houston Colt .45s | 3 | Final |
| Los Angeles Dodgers | 11 |
| W | Bob Miller (1-0) |
| L | Conrad Cardinal (0-1) |
| S | Ron Perranoski (1) |
| Houston Colt .45s | 5 | Final |
| Los Angeles Dodgers | 6 |
| W | Ed Roebuck (1-2) |
| L | George Brunet (0-3) |
| Milwaukee Braves | 5 | Final |
| New York Mets | 8 |
| W | Ken MacKenzie (2-0) |
| L | Claude Raymond (2-1) |
| S | Roger Craig (1) |
| Milwaukee Braves | 2 | Final |
| New York Mets | 9 |
| W | Galen Cisco (1-1) |
| L | Lew Burdette (2-1) |
| S | Ken MacKenzie (1) |
| St. Louis Cardinals | 3 | Final |
| Philadelphia Phillies | 4 | (10) |
| W | Dallas Green (1-0) |
| L | Ed Bauta (0-1) |
| St. Louis Cardinals | 10 | Final |
| Philadelphia Phillies | 5 |
| W | Harry Fanok (2-0) |
| L | Art Mahaffey (1-2) |
| Cincinnati Reds | 8 | Final |
| Pittsburgh Pirates | 3 |
| W | Jim Maloney (2-0) |
| L | Al McBean (1-1) |
| Chicago Cubs | 4 | Final |
| San Francisco Giants | 1 |
| W | Dick Ellsworth (2-1) |
| L | Jack Fisher (0-1) |
| S | Barney Schultz (2) |
| Chicago Cubs | 2 | Final |
| San Francisco Giants | 3 |
| W | Billy O'Dell (2-0) |
| L | Cal Koonce (0-1) |
| New York Yankees | 7 | Final |
| Washington Senators | 6 |
| W | Jim Bouton (1-0) |
| L | Jim Bronstad (0-1) |
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