Here are the 99 players in the top 100 who played at least one regular game, ranked by kills per root game.

KPRG Player
16.05 aalanda
11.12 Tarleton
10.37 gogi
10.23 AlexKon
10.19 Noobie
10.15 hahakaka6
10.10 arkenkor
10.06 am I
9.91 kakku man
9.79 the die
9.76 toad92
9.74 ahnbohwan
9.73 TASOS1
9.35 michele
9.30 gerinc
9.04 Beach_Bum_13
8.77 featherfan777
8.71 Jocker46
8.64 __iRambo
8.57 fgfx
7.63 angel30
7.57 BenJa LeZana
7.36 Nerd Alert
7.31 stakaboo
7.22 SOWL
7.05 iDu
6.81 awesmotness
6.80 Mork1
6.69 panzer
6.59 rocka09
6.52 Egazas
6.40 IFIGENIUS
6.29 cadpilot
6.26 Groper
6.24 jf220
6.22 andrea92
6.01 bivo
5.84 Lady Lite
5.81 Iwassframed
5.79 Help, I'm a rock
5.75 axlehammer
5.44 davilfs
5.38 Dude111
5.28 Fatman_x
5.25 fish28
5.12 djefferson
5.05 john_egg
5.04 HeavyMetalManiac
5.03 Rebel9
4.70 seeb
4.70 KillwithSkill
4.65 Its AIex
4.61 dainiusg
4.59 masticore
4.55 ireneo
4.54 PSYCHO INSANE
4.53 spman
4.43 Khalid
4.42 ehervey
4.38 tryin'
4.33 Gurg1
4.24 moulue
4.21 hamaguriys
3.95 longpube
3.93 sw1ft25
3.91 Grux
3.91 objecta2
3.90 nothin
3.88 Zigua
3.85 greenman
3.69 Cafterdeath
3.54 Soromon
3.53 parsifal
3.48 The AntiTruce
3.42 apignarb
3.36 greeen
3.32 YuxxyB
3.25 Loobee
3.15 celta
3.11 Marlon Castillo
3.01 Bart Lee
2.81 partykoala
2.80 bad stack
2.65 ilphae
2.41 Skerdikas
2.31 PRESIDENT N° 1
2.12 chiefKeef
2.02 spman2
1.98 franklyghost
1.60 ALEC BALDWIN
1.60 negramarta
1.44 jurgen
1.22 craig blubber
1.18 gameboy
1.06 OneShot7
0.75 Lil Johnson213
0.71 Brennwert
0.67 2devi
0.00 vino_en_carton