| 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 Martinez (2)** | STL | 0.92 | 0.314 | 86 | 8 | 14 | 21 | 27 | 0 |
| 1B | Jose Abreu (12) | CHW | 0.36 | 0.212 | 113 | 3 | 11 | 16 | 24 | 0 |
| 1B | Josh Bell (13) | PIT | 0.33 | 0.244 | 78 | 1 | 12 | 10 | 21 | 0 |
| 2B | Gleyber Torres (9)** | NYY | 0.51 | 0.253 | 95 | 5 | 10 | 13 | 18 | 1 |
| 2B | Whit Merrifield (15) | KC | 0.26 | 0.298 | 94 | 0 | 5 | 2 | 7 | 4 |
| SS | Francisco Lindor (3)** | CLE | 0.77 | 0.243 | 103 | 6 | 22 | 12 | 28 | 4 |
| SS | Paul DeJong (19) | STL | 0.00 | 0.000 | 0 | 0 | 0 | 0 | 0 | 0 |
| 3B | Nolan Arenado (2)** | COL | 1.04 | 0.283 | 106 | 9 | 21 | 23 | 35 | 0 |
| 3B | Justin Turner (10) | LAD | 0.42 | 0.268 | 71 | 4 | 10 | 7 | 13 | 1 |
| C | Buster Posey (5)** | SF | 0.43 | 0.273 | 88 | 2 | 14 | 7 | 19 | 1 |
| C | Chance Sisco (19) | BAL | -0.02 | 0.219 | 32 | 0 | 1 | 1 | 2 | 0 |
| OF | Rhys Hoskins (4)** | PHI | 1.00 | 0.312 | 77 | 8 | 17 | 22 | 31 | 1 |
| OF | Marcell Ozuna (9)** | STL | 0.89 | 0.333 | 102 | 7 | 12 | 21 | 26 | -1 |
| OF | Michael Taylor (15)** | WAS | 0.71 | 0.349 | 63 | 1 | 9 | 10 | 18 | 10 |
| OF | Scott Schebler (14) | CIN | 0.71 | 0.330 | 91 | 4 | 17 | 11 | 24 | 0 |
| OF | Matt Kemp (22) | LAD | 0.61 | 0.220 | 82 | 6 | 15 | 17 | 26 | 0 |
| OF | Chris Taylor (36) | LAD | 0.42 | 0.276 | 76 | 2 | 10 | 10 | 18 | 1 |
| OF | Tommy Pham (45) | STL | 0.26 | 0.198 | 96 | 3 | 15 | 5 | 17 | 1 |
| 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 | Jacob deGrom (9)** | NYM | 0.90 | 1 | 4 | 0 | 2.3571 | 6 | 6 | 42.0 | 1.0238 | 49 |
| SP | Charlie Morton (16)** | HOU | 0.77 | 3 | 1 | 0 | 3.2143 | 5 | 5 | 28.0 | 1.3214 | 37 |
| SP | Marco Estrada (20)** | TOR | 0.70 | 2 | 1 | 0 | 2.3478 | 5 | 5 | 30.2 | 0.9783 | 27 |
| SP | Felix Hernandez (28)** | SEA | 0.64 | 3 | 2 | 0 | 3.7059 | 6 | 6 | 34.0 | 1.2647 | 30 |
| SP | Eduardo Rodriguez (47)** | BOS | 0.45 | 3 | 2 | 0 | 4.6098 | 5 | 5 | 27.1 | 1.5000 | 22 |
| SP | Junior Guerra (49) | MIL | 0.41 | 1 | 2 | 0 | 3.8118 | 5 | 5 | 28.1 | 1.3412 | 29 |
| SP | Robbie Ray (65) | ARI | 0.20 | 1 | 0 | 0 | 0.0000 | 1 | 1 | 6.0 | 0.6667 | 6 |
| SP | Fernando Romero (68) | MIN | 0.17 | 1 | 1 | 0 | 4.7143 | 4 | 4 | 21.0 | 1.2857 | 14 |
| SP | Jake Odorizzi (76) | MIN | 0.07 | 0 | 3 | 0 | 5.9559 | 5 | 5 | 22.2 | 1.6765 | 27 |
| SP | Drew Pomeranz (87) | BOS | -0.18 | 0 | 0 | 0 | 0.0000 | 0 | 0 | 0.0 | 0.0000 | 0 |
| SP | Adam Wainwright (88) | STL | -0.18 | 0 | 0 | 0 | 0.0000 | 0 | 0 | 0.0 | 0.0000 | 0 |
| SP | Gio Gonzalez (98) | WAS | -0.23 | 0 | 3 | 0 | 8.4375 | 5 | 5 | 21.1 | 1.8281 | 19 |
| RP | Brad Peacock (24)** | HOU | 0.42 | 0 | 0 | 0 | 0.6750 | 12 | 0 | 13.1 | 0.6000 | 22 |
| RP | Brad Boxberger (25)** | ARI | 0.35 | 0 | 1 | 6 | 7.7143 | 11 | 0 | 9.1 | 1.7143 | 12 |
| RP | Wade Davis (33)** | COL | 0.21 | 0 | 2 | 5 | 9.3103 | 11 | 0 | 9.2 | 1.7586 | 11 |
| RP | Greg Holland (35) | STL | 0.06 | 0 | 0 | 0 | 0.0000 | 5 | 0 | 4.2 | 0.4286 | 7 |