| April | May | June | July | August | September | Season-to-Date |
| Back to Team Rankings | Mike O | Casey S | J&P G | Terry | Ron | Alan | Walter | Bill | Joe |
| Est. Value | Average | AB | Homers | Runs | RBI | Runs Prod | Steals | |||
| 1B | Jose Abreu (6)** | CHW | 0.78 | 0.330 | 106 | 3 | 14 | 19 | 30 | 0 |
| 1B | Josh Bell (9) | PIT | 0.57 | 0.280 | 93 | 3 | 13 | 15 | 25 | 0 |
| 1B | Jose Martinez (13) | STL | 0.49 | 0.281 | 96 | 2 | 11 | 13 | 22 | 1 |
| 2B | Gleyber Torres (2)** | NYY | 0.99 | 0.317 | 82 | 9 | 13 | 24 | 28 | 0 |
| 2B | Whit Merrifield (6) | KC | 0.73 | 0.307 | 101 | 1 | 14 | 12 | 25 | 8 |
| SS | Francisco Lindor (1)** | CLE | 1.47 | 0.373 | 118 | 10 | 27 | 23 | 40 | 1 |
| SS | Paul DeJong (14) | STL | 0.14 | 0.229 | 48 | 1 | 5 | 5 | 9 | 0 |
| 3B | Nolan Arenado (2)** | COL | 1.08 | 0.327 | 101 | 7 | 21 | 21 | 35 | 1 |
| 3B | Justin Turner (16) | LAD | 0.23 | 0.255 | 55 | 1 | 6 | 8 | 13 | 0 |
| C | Buster Posey (7)** | SF | 0.46 | 0.329 | 79 | 1 | 11 | 9 | 19 | 0 |
| C | Chance Sisco (13) | BAL | 0.16 | 0.167 | 48 | 1 | 6 | 8 | 13 | 1 |
| OF | Tommy Pham (22)** | STL | 0.56 | 0.195 | 87 | 6 | 17 | 11 | 22 | 3 |
| OF | Chris Taylor (28)** | LAD | 0.50 | 0.253 | 91 | 3 | 16 | 10 | 23 | 1 |
| OF | Marcell Ozuna (36)** | STL | 0.39 | 0.273 | 88 | 1 | 12 | 6 | 17 | 3 |
| OF | Scott Schebler (43) | CIN | 0.27 | 0.200 | 85 | 3 | 10 | 9 | 16 | 1 |
| OF | Rhys Hoskins (49) | PHI | 0.16 | 0.161 | 87 | 2 | 12 | 9 | 19 | 0 |
| OF | Michael Taylor (51) | WAS | 0.10 | 0.185 | 92 | 1 | 6 | 5 | 10 | 4 |
| Back to Team Rankings | Mike O | Casey S | J&P G | Terry | Ron | Alan | Walter | Bill | Joe |
| Est. Value | Wins | Losses | Saves | ERA | Games | Starts | Innings | WHIP | K's | |||
| SP | Gio Gonzalez (11)** | WAS | 0.91 | 3 | 0 | 0 | 1.4674 | 5 | 5 | 30.2 | 1.1413 | 26 |
| SP | Eduardo Rodriguez (13)** | BOS | 0.85 | 3 | 1 | 0 | 3.1765 | 6 | 6 | 34.0 | 1.1176 | 43 |
| SP | Charlie Morton (14)** | HOU | 0.85 | 3 | 0 | 0 | 2.9032 | 5 | 5 | 31.0 | 1.0645 | 40 |
| SP | Jacob deGrom (15)** | NYM | 0.85 | 1 | 0 | 0 | 0.6923 | 5 | 5 | 26.0 | 0.9615 | 37 |
| SP | Fernando Romero (44)** | MIN | 0.48 | 2 | 2 | 0 | 4.1538 | 6 | 6 | 30.1 | 1.3846 | 30 |
| SP | Junior Guerra (51) | MIL | 0.41 | 1 | 2 | 0 | 3.8969 | 6 | 6 | 32.1 | 1.2371 | 30 |
| SP | Jake Odorizzi (53) | MIN | 0.39 | 1 | 0 | 0 | 4.3548 | 6 | 6 | 31.0 | 1.3226 | 34 |
| SP | Felix Hernandez (72) | SEA | 0.09 | 2 | 2 | 0 | 6.6832 | 6 | 6 | 33.2 | 1.5149 | 29 |
| SP | Drew Pomeranz (76) | BOS | 0.01 | 1 | 2 | 0 | 6.6706 | 6 | 6 | 28.1 | 1.8706 | 25 |
| SP | Marco Estrada (80) | TOR | -0.01 | 0 | 4 | 0 | 5.4000 | 6 | 6 | 31.2 | 1.4842 | 19 |
| SP | Adam Wainwright (86) | STL | -0.14 | 0 | 1 | 0 | 7.7143 | 1 | 1 | 2.1 | 3.8571 | 3 |
| SP | Robbie Ray (90) | ARI | -0.18 | 0 | 0 | 0 | 0.0000 | 0 | 0 | 0.0 | 0.0000 | 0 |
| RP | Wade Davis (12)** | COL | 0.73 | 0 | 0 | 8 | 2.3143 | 12 | 0 | 11.2 | 1.2000 | 11 |
| RP | Brad Boxberger (19)** | ARI | 0.55 | 1 | 0 | 4 | 1.1250 | 8 | 0 | 8.0 | 0.7500 | 12 |
| RP | Brad Peacock (34)** | HOU | 0.14 | 0 | 2 | 0 | 3.0000 | 10 | 0 | 9.0 | 1.2222 | 12 |
| RP | Greg Holland (41) | STL | -0.25 | 0 | 1 | 0 | 12.0000 | 8 | 0 | 6.0 | 3.0000 | 3 |