| No | Name | Team | G | PA | AB | R | H | 2B | 3B | HR | RBI | HBP | BB | SO | SacB | SacF | SB | CS | AVG | OBP | SLG | OPS |
| 3 | Jacinto, Juan | 48+ Blues | 7 | 13 | 13 | 1 | 4 | 1 | 2 | 4 | .308 | .308 | .462 | .769 | ||||||||
| 30 | Jackson, Justin | 38+ Mariners | 11 | 16 | 14 | 3 | 5 | 1 | 3 | 2 | 1 | .357 | .437 | .429 | .866 | |||||||
| 51 | Jannisch, Jim | 48+ Woodpeckers | 6 | 1 | 1 | 1 | 1.000 | 1.000 | 1.000 | 2.000 | ||||||||||||
| 7 | Janyk, Myron | 65+ Yaquis | 9 | 23 | 19 | 4 | 6 | 1 | 6 | 3 | 5 | 1 | .316 | .391 | .368 | .760 | ||||||
| 51 | Jarmusz, Jim | 48+ Blues | 2 | 2 | 1 | 1 | .000 | .500 | .000 | .500 | ||||||||||||
| 3 | Jay, Ralph | 38+ Regulators | 9 | 21 | 15 | 6 | 7 | 5 | 6 | 5 | 5 | .467 | .619 | .467 | 1.086 | |||||||
| 21 | Jazo, John | 65+ Red Angels | 9 | 26 | 23 | 6 | 7 | 3 | 2 | 3 | 3 | .304 | .385 | .435 | .819 | |||||||
| 1 | Jennings, Ryan | 38+ Regulators | 2 | 7 | 6 | 1 | 1 | 1 | 3 | .167 | .286 | .167 | .452 | |||||||||
| 1 | Jennings, Ryan | 38+ Regulators | 13 | 28 | 24 | 2 | 8 | 1 | 4 | 3 | 1 | 2 | 4 | .333 | .429 | .375 | .804 | |||||
| 5 | Jensen Jr, John | 18+ Giants | 13 | 34 | 24 | 7 | 5 | 3 | 5 | 9 | 4 | 1 | 1 | .208 | .412 | .458 | .870 | |||||
| 18 | Jensen Sr, John | 18+ Giants | 12 | 35 | 23 | 4 | 5 | 1 | 3 | 3 | 9 | 5 | .217 | .486 | .261 | .747 | ||||||
| 18 | Jensen, John | 38+ Giants | 12 | 34 | 28 | 11 | 13 | 5 | 11 | 2 | 4 | .464 | .559 | .643 | 1.202 | |||||||
| 41 | Johnson, Al | 60+ Chiefs | 11 | 15 | 13 | 1 | 3 | 1 | 1 | 1 | 1 | .231 | .286 | .231 | .516 | |||||||
| 29 | Johnson, Al | 65+ Red Angels | 9 | 23 | 22 | 3 | 4 | 3 | 1 | 3 | .182 | .217 | .182 | .399 | ||||||||
| 24 | Johnson, Bill | 65+ Yaquis | 10 | 28 | 20 | 7 | 8 | 6 | 8 | 3 | .400 | .571 | .400 | .971 | ||||||||
| 1 | Johnson, Nick | 18+ Finest | 12 | .000 | .000 | .000 | .000 | |||||||||||||||
| Johnson, Rick | 48+ Woodpeckers | 6 | 13 | 10 | 5 | 1 | 1 | 3 | 1 | .100 | .308 | .100 | .408 | |||||||||
| 8 | Jones, Jeremy | 18+ Finest | 2 | .000 | .000 | .000 | .000 | |||||||||||||||
| 71 | Juggan, Kevin | 48+ Colts | 6 | 1 | 1 | .000 | 1.000 | .000 | 1.000 | |||||||||||||
| 51 | Jurmucz, Jim | 60+ Blues | 7 | 10 | 9 | 1 | 2 | 3 | 1 | .222 | .300 | .222 | .522 | |||||||||
| 32 | Kafer, Jack | 48+ Royals | 7 | 18 | 16 | 4 | 9 | 2 | 6 | 2 | 2 | .562 | .611 | .687 | 1.299 | |||||||
| 32 | Kaffer, Jack | 38+ Royals | 6 | 13 | 11 | 7 | 7 | 1 | 1 | 1 | 9 | 1 | 1 | .636 | .692 | 1.182 | 1.874 | |||||
| 37 | Kamin, Nate | 18+ Mighty Ducks | 8 | .000 | .000 | .000 | .000 | |||||||||||||||
| 30 | Kaptur, Tim | 65+ Yaquis | 7 | 22 | 18 | 4 | 10 | 3 | 3 | 1 | 1 | .556 | .591 | .556 | 1.146 | |||||||
| 3 | Karim, Maher | 48+ Warriors | 14 | 23 | 18 | 3 | 4 | 2 | 5 | 9 | 1 | .222 | .391 | .222 | .614 |