| 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 (7)** | STL | 0.63 | 0.306 | 98 | 3 | 10 | 18 | 25 | 0 |
| 1B | Jose Abreu (8) | CHW | 0.62 | 0.263 | 99 | 6 | 14 | 12 | 20 | 1 |
| 1B | Josh Bell (13) | PIT | 0.42 | 0.232 | 112 | 1 | 15 | 16 | 30 | 0 |
| 2B | Chris Taylor (10)** | LAD | 0.53 | 0.232 | 125 | 4 | 21 | 10 | 27 | 1 |
| 2B | Whit Merrifield (9) | KC | 0.55 | 0.266 | 109 | 3 | 13 | 10 | 20 | 4 |
| SS | Paul DeJong (6)** | STL | 0.74 | 0.275 | 102 | 7 | 17 | 14 | 24 | 0 |
| SS | Francisco Lindor (13) | CLE | 0.63 | 0.245 | 110 | 4 | 17 | 11 | 24 | 5 |
| SS | Gleyber Torres (19) | NYY | 0.16 | 0.323 | 31 | 0 | 4 | 2 | 6 | 1 |
| 3B | Nolan Arenado (3)** | COL | 0.64 | 0.310 | 87 | 4 | 12 | 13 | 21 | 1 |
| C | Buster Posey (6)** | SF | 0.45 | 0.273 | 88 | 2 | 11 | 10 | 19 | 2 |
| C | Chance Sisco (13) | BAL | 0.20 | 0.255 | 47 | 1 | 5 | 7 | 11 | 0 |
| OF | Tommy Pham (8)** | STL | 0.89 | 0.341 | 88 | 3 | 22 | 10 | 29 | 5 |
| OF | Rhys Hoskins (11)** | PHI | 0.84 | 0.303 | 89 | 4 | 16 | 19 | 31 | 3 |
| OF | Michael Taylor (22)** | WAS | 0.62 | 0.222 | 99 | 3 | 17 | 9 | 23 | 9 |
| OF | Scott Schebler (25) | CIN | 0.54 | 0.320 | 50 | 3 | 11 | 11 | 19 | 1 |
| OF | Marcell Ozuna (36) | STL | 0.40 | 0.250 | 108 | 2 | 8 | 17 | 23 | 0 |
| 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 | Charlie Morton (7)** | HOU | 1.22 | 4 | 0 | 0 | 1.7182 | 6 | 6 | 36.2 | 0.9818 | 45 |
| SP | Jacob deGrom (8)** | NYM | 1.12 | 3 | 0 | 0 | 2.0593 | 6 | 6 | 39.1 | 1.0424 | 48 |
| SP | Gio Gonzalez (19)** | WAS | 0.87 | 3 | 2 | 0 | 2.6733 | 6 | 6 | 33.2 | 1.4257 | 37 |
| SP | Robbie Ray (46)** | ARI | 0.54 | 2 | 0 | 0 | 4.8795 | 6 | 6 | 27.2 | 1.5181 | 45 |
| SP | Eduardo Rodriguez (48)** | BOS | 0.50 | 3 | 0 | 0 | 4.7848 | 5 | 5 | 26.1 | 1.3291 | 29 |
| SP | Jake Odorizzi (49) | MIN | 0.48 | 2 | 2 | 0 | 3.9375 | 6 | 6 | 32.0 | 1.3750 | 27 |
| SP | Felix Hernandez (54) | SEA | 0.42 | 3 | 2 | 0 | 4.9592 | 6 | 6 | 32.2 | 1.2857 | 26 |
| SP | Adam Wainwright (69) | STL | 0.26 | 1 | 2 | 0 | 3.4468 | 3 | 3 | 15.2 | 1.5319 | 12 |
| SP | Marco Estrada (71) | TOR | 0.19 | 2 | 2 | 0 | 6.0000 | 5 | 5 | 27.0 | 1.4444 | 23 |
| SP | Drew Pomeranz (81) | BOS | -0.04 | 0 | 1 | 0 | 7.2692 | 2 | 2 | 8.2 | 1.7308 | 11 |
| RP | Wade Davis (4)** | COL | 0.89 | 0 | 0 | 10 | 2.3824 | 12 | 0 | 11.1 | 0.7941 | 14 |
| RP | Brad Boxberger (6)** | ARI | 0.84 | 0 | 2 | 9 | 2.2500 | 13 | 0 | 12.0 | 1.4167 | 15 |
| RP | Brad Peacock (27)** | HOU | 0.39 | 1 | 1 | 1 | 2.8421 | 11 | 0 | 12.2 | 0.9474 | 16 |
| RP | Greg Holland (38) | STL | -0.09 | 0 | 1 | 0 | 7.3636 | 10 | 0 | 7.1 | 2.3182 | 7 |