MLB Scores and Standings Monday, May 31, 1915
| Newark Pepper | 3 | Final |
| Brooklyn Tip-Tops | 5 |
| W | Ed Lafitte (5-2) |
| L | Charlie Whitehouse (1-2) |
| S | Bill Upham (2) |
| Philadelphia Phillies | 1 | Final |
| Boston Braves | 2 |
| W | Tom Hughes (5-4) |
| L | George Chalmers (2-4) |
| Philadelphia Phillies | 5 | Final |
| Boston Braves | 2 |
| W | Erskine Mayer (7-2) |
| L | Lefty Tyler (2-2) |
| Baltimore Terrapins | 0 | Final |
| Buffalo Blues | 2 |
| W | Fred Anderson (3-3) |
| L | Charles Bender (1-5) |
| Baltimore Terrapins | 5 | Final |
| Buffalo Blues | 3 |
| W | George Suggs (6-3) |
| L | Gene Krapp (2-7) |
| Detroit Tigers | 4 | Final |
| Chicago White Sox | 3 |
| W | Pug Cavet (1-1) |
| L | Eddie Cicotte (1-4) |
| Detroit Tigers | 1 | Final |
| Chicago White Sox | 3 |
| W | Reb Russell (6-2) |
| L | Bernie Boland (4-5) |
| Kansas City Packers | 3 | Final |
| Chicago Whales | 2 | (10) |
| W | Alex Main (5-3) |
| L | George McConnell (5-4) |
| Kansas City Packers | 1 | Final |
| Chicago Whales | 2 | (11) |
| W | Mordecai Brown (5-2) |
| L | Pete Henning (0-2) |
| St. Louis Browns | 1 | Final |
| Cleveland Indians | 12 |
| W | Willie Mitchell (4-6) |
| L | Grover Lowdermilk (5-6) |
| St. Louis Browns | 6 | Final |
| Cleveland Indians | 9 |
| W | Guy Morton (7-3) |
| L | Parson Perryman (2-2) |
| Brooklyn Tip-Tops | 3 | Final |
| Newark Pepper | 5 |
| W | Harry Moran (5-2) |
| L | Dan Marion (1-3) |
| Brooklyn Dodgers | 2 | Final |
| New York Giants | 4 |
| W | Pol Perritt (2-4) |
| L | Leon Cadore (0-1) |
| Brooklyn Dodgers | 6 | Final |
| New York Giants | 2 |
| W | Nap Rucker (1-3) |
| L | Ralph Stroud (2-3) |
| Boston Red Sox | 2 | Final |
| Philadelphia Athletics | 1 |
| W | Rube Foster (5-2) |
| L | Bullet Joe Bush (0-5) |
| Boston Red Sox | 9 | Final |
| Philadelphia Athletics | 2 |
| W | Carl Mays (3-2) |
| L | Bob Shawkey (5-5) |
| S | Ray Collins (1) |
| Chicago Cubs | 0 | Final |
| Pittsburgh Pirates | 1 |
| W | Wilbur Cooper (2-5) |
| L | Jimmy Lavender (2-1) |
| Chicago Cubs | 0 | Final |
| Pittsburgh Pirates | 1 |
| W | Al Mamaux (6-1) |
| L | Larry Cheney (0-5) |
| Pittsburgh Rebels | 2 | Final |
| St. Louis Terriers | 3 |
| W | Bob Groom (7-3) |
| L | Clint Rogge (5-5) |
| Cincinnati Reds | 2 | Final |
| St. Louis Cardinals | 1 |
| W | Gene Dale (6-2) |
| L | Bill Doak (5-5) |
| New York Yankees | 11 | Final |
| Washington Nationals | 4 |
| W | Ray Caldwell (5-3) |
| L | Bert Gallia (3-4) |
| New York Yankees | 4 | Final |
| Washington Nationals | 1 |
| W | Ray Fisher (7-1) |
| L | Joe Boehling (3-5) |
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