MLB Scores and Standings Sunday, June 21, 1964
| Boston Red Sox | 9 | Final |
| Baltimore Orioles | 6 |
| W | Earl Wilson (7-2) |
| L | Steve Barber (3-4) |
| S | Bill Monbouquette (1) |
| New York Yankees | 2 | Final |
| Chicago White Sox | 0 |
| W | Jim Bouton (5-6) |
| L | Juan Pizarro (8-4) |
| S | Pete Mikkelsen (6) |
| New York Yankees | 2 | Final |
| Chicago White Sox | 1 | (17) |
| W | Bill Stafford (4-0) |
| L | Don Mossi (1-1) |
| Los Angeles Dodgers | 4 | Final |
| Cincinnati Reds | 2 |
| W | Sandy Koufax (10-4) |
| L | Bob Purkey (3-4) |
| S | Bob Miller (2) |
| Los Angeles Dodgers | 1 | Final |
| Cincinnati Reds | 2 |
| W | Joey Jay (4-2) |
| L | Larry Miller (0-1) |
| Washington Senators | 13 | Final |
| Kansas City Athletics | 2 |
| W | Buster Narum (7-5) |
| L | Orlando Peña (7-6) |
| Washington Senators | 5 | Final |
| Kansas City Athletics | 2 |
| W | Alan Koch (2-2) |
| L | Ted Bowsfield (1-2) |
| S | Ron Kline (7) |
| Cleveland Indians | 1 | Final |
| Los Angeles Angels | 4 |
| W | Bo Belinsky (5-3) |
| L | Jack Kralick (7-2) |
| S | Bob Duliba (3) |
| Detroit Tigers | 4 | Final |
| Minnesota Twins | 2 |
| W | Dave Wickersham (9-5) |
| L | Dick Stigman (3-6) |
| S | Ed Rakow (2) |
| Houston Colt .45s | 5 | Final |
| Milwaukee Braves | 2 |
| W | Bob Bruce (7-3) |
| L | Warren Spahn (5-6) |
| Houston Colt .45s | 5 | Final |
| Milwaukee Braves | 4 |
| W | Ken Johnson (6-6) |
| L | Denny Lemaster (7-5) |
| S | Hal Woodeshick (14) |
| Philadelphia Phillies | 6 | Final |
| New York Mets | 0 |
| W | Jim Bunning (7-2) |
| L | Tracy Stallard (4-9) |
| Philadelphia Phillies | 8 | Final |
| New York Mets | 2 |
| W | Rick Wise (1-0) |
| L | Frank Lary (0-4) |
| S | Johnny Klippstein (1) |
| Chicago Cubs | 2 | Final |
| Pittsburgh Pirates | 1 |
| W | Larry Jackson (9-5) |
| L | Bob Veale (6-5) |
| Chicago Cubs | 7 | Final |
| Pittsburgh Pirates | 2 |
| W | Lew Burdette (3-1) |
| L | Steve Blass (3-4) |
| S | Lindy McDaniel (8) |
| San Francisco Giants | 7 | Final |
| St. Louis Cardinals | 3 |
| W | Jack Sanford (5-7) |
| L | Curt Simmons (7-6) |
| S | Gaylord Perry (2) |
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