Dwight Freeney had the most forced fumbles by a player in his first 4 seasons, with 23 forced fumbles.

most forced fumbles through first 4 years
Interpreted as:
most forced fumbles by a player through first 4 years
FreeneyMathisWareLittleWattTaylorKerriganRiceNgakoueAvrilHaliSuggsPeppersQuinnAllenSmithLeonardMillerWattGrantGbaja-BiamilaStrahanHumphrey2321181817161515141414141413131312121212121211
NAMEGPFFTKLASTCOMBSCKSCKYINTINT YDSINT TDFRFR TD
Dwight FreeneyDwight Freeney63231361314951.0372.500031
Robert MathisRobert Mathis61211453317835.0298.500060
DeMarcus WareDeMarcus Ware64182356429953.5357.5141121
Leonard LittleLeonard Little57181482617446.0300128072
T.J. WattT.J. Watt62171686223049.5339.5424040
Jason TaylorJason Taylor64161749426849.5341.5210112
Ryan KerriganRyan Kerrigan64151826624838.0270237220
Simeon RiceSimeon Rice64151592518453.5379342010
Yannick NgakoueYannick Ngakoue63141051712237.5248.5232131
Cliff AvrilCliff Avril5714973613330.0220.514151
Tamba HaliTamba Hali63141825723927.0166.51-9020
Terrell SuggsTerrell Suggs64141586322140.0309.5349090
Julius PeppersJulius Peppers60141593819740.5249.53164121
Robert QuinnRobert Quinn63131322215445.031400021
Jared AllenJared Allen61132003023043.0281.513080
Will SmithWill Smith62131606022033.5221.500060
Darius LeonardDarius Leonard491229817046815.095.59138170
Von MillerVon Miller56121755122649.0318126121
J.J. WattJ.J. Watt64122425329557.0396.51801111
Charles GrantCharles Grant64121885224030.0177.518031
Kabeer Gbaja-BiamilaKabeer Gbaja-Biamila63121234216549.0313172140
Michael StrahanMichael Strahan56122035125456.0392.500061
Marlon HumphreyMarlon Humphrey6111184342182.514.5855032
Jamie CollinsJamie Collins581122813135912.587.5582041
Alec OgletreeAlec Ogletree52113041044083.517.55157110
StatMuse has season-level data for forced fumbles going back to the 2001 season.