LeBron James has scored the most career points by an 18-year-old player, with 625 points.

most points scored by a player at age 18
JamesBryantMcGradyWilloughbyO'NealHowardBynumBiedrinsAntetokounmpoSmithGraboskiCurryBrownMilicicMilesWebsterDawkinsBenderKorolevJohnsonBenderBookerDoumbouyaLampePrimo62553945129218517974736866665750484136363027202014865
NAMEGPPTSMPGPPGRPGAPGSPGBPGTPGFGMFGAFG%3PM3PA3P%FTMFTAFT%MINREBASTSTLBLKTOVPF+/-
LeBron JamesLeBron James3162540.220.25.96.11.60.73.97.617.942.61.03.331.13.85.077.31,247184188492312156-67
Kobe BryantKobe Bryant7153915.57.61.91.30.70.31.62.55.941.70.71.937.51.92.381.91,103132914923112102+60
Tracy McGradyTracy McGrady6445118.47.04.21.50.81.01.02.86.245.00.20.634.11.21.771.21,1792699849616686-229
Bill WilloughbyBill Willoughby622924.71.81.11.666.0
Jermaine O'NealJermaine O'Neal4518510.24.12.80.20.00.60.61.53.445.10.00.00.01.01.760.345812482262746+26
Dwight HowardDwight Howard1717932.010.510.41.61.01.92.23.86.954.70.00.03.05.158.65441772717323840+19
Andrew BynumAndrew Bynum46747.41.61.70.20.10.50.40.71.840.20.00.00.20.629.63388094221756-47
Andris BiedrinsAndris Biedrins207311.93.73.20.30.50.80.41.62.659.60.00.10.00.61.342.3237636915749+4
Giannis AntetokounmpoGiannis Antetokounmpo136816.25.23.20.90.50.71.02.14.150.90.51.240.00.61.250.02104212791323+3
Josh SmithJosh Smith136612.75.12.60.80.30.71.21.93.949.00.00.20.01.21.964.01653411491618-8
Joe GraboskiJoe Graboski18663.71.50.71.448.0
Eddy CurryEddy Curry135712.44.42.20.30.20.80.91.53.640.40.00.01.52.461.31612942111223-44
Stan BrownStan Brown19502.61.00.6
Darko MilicicDarko Milicic34484.71.41.30.20.20.40.40.51.926.20.00.00.00.40.758.31594377151333-45
CJ MilesCJ Miles17417.92.41.50.50.20.00.40.82.928.60.20.821.40.60.876.913425940615+16
Martell WebsterMartell Webster9369.24.00.70.10.10.01.01.63.643.80.92.044.40.00.083611098-29
Darryl DawkinsDarryl Dawkins19361.91.40.20.91.850.00.10.522.226318
Dragan BenderDragan Bender9309.43.31.00.40.20.30.31.33.142.90.71.740.00.00.0859423312+16
Yaroslav KorolevYaroslav Korolev24275.31.10.50.40.10.00.30.41.330.00.10.328.60.30.470.012713930611-8
Amir JohnsonAmir Johnson32012.96.71.31.00.00.71.32.33.370.00.71.066.71.31.3100.039430247-22
Jonathan BenderJonathan Bender9204.42.20.80.00.00.30.40.92.338.10.20.640.00.20.450.040700345-5
Devin BookerDevin Booker11421.314.03.00.01.00.00.06.07.085.71.02.050.01.03.033.321301002+4
Sekou DoumbouyaSekou Doumbouya584.21.60.60.00.20.00.20.82.236.40.00.60.00.00.20.021301013+8
Maciej LampeMaciej Lampe367.72.01.00.00.30.00.31.02.737.50.00.70.00.00.023301014-6
Joshua PrimoJoshua Primo353.01.70.30.30.00.00.00.70.7100.00.30.3100.00.00.09110000-3