| Game | Hard |
|---|---|
| CLE@SEA (5/29/15) | -4.97 |
| NYY@SEA (6/3/15) | -4.31 |
| SEA@CLE (6/10/15) | -4.06 |
| SEA@SF (6/15/15) | -4.44 |
| HOU@SEA (6/20/15) | -4.67 |
| SEA@LAA (6/26/15) | -4.47 |
| SEA@SD (7/1/15) | -3.36 |
| DET@SEA (7/7/15) | -4.55 |
| LAA@SEA (7/12/15) | -3.65 |
| SEA@DET (7/21/15) | -3.66 |
| TOR@SEA (7/26/15) | -4.03 |
| SEA@MIN (7/31/15) | -3.51 |
| SEA@COL (8/5/15) | -3.34 |
| BAL@SEA (8/11/15) | -4.50 |
| SEA@TEX (8/17/15) | -3.53 |
| CWS@SEA (8/23/15) | -3.87 |
| SEA@CWS (8/28/15) | -4.35 |
| SEA@HOU (9/2/15) | -4.08 |
| TEX@SEA (9/8/15) | -4.53 |
| LAA@SEA (9/14/15) | -4.43 |