Here are the top 100 players ranked by kills per root game.

KPRG Player
14.03 TASOS1
10.91 Drucifer85
9.84 ersinka33
9.81 Dude111
9.62 toms
9.44 arkenkor
9.24 S3Z0
9.19 Rastaa Man :)
9.10 spanky6
8.91 hcdug
8.76 Qaziyev
8.50 Erathia
8.36 Beach_Bum_13
8.13 jurgen
8.07 savif
8.04 Wandigo
7.94 rocka09
7.88 Nerd Alert
7.64 Kurwa_pendecho
7.60 dnaa
7.47 Help, I'm a rock
7.45 avesano
7.19 benjamin barker
7.13 Im Defeated
7.08 Verano73
6.96 PussyPounder
6.87 Sabala
6.84 JUSTcallmePRE
6.64 LUX88
6.58 IFIGENIUS
6.38 procutter
6.26 kdiceplaya!
6.24 Farles
6.23 Captain_Falcon
6.22 Hong Kong
6.19 tyla
6.15 SnakePitVenom
6.10 Bombardier DS 65
6.07 OberynMartell
5.90 Hypernode
5.90 DutchBastard
5.90 Puvis
5.90 lipos
5.88 dasfury
5.79 THRILLHO
5.79 Honyo
5.78 Whitehawk
5.71 BugThug
5.62 twiga
5.59 Marlon Castillo
5.51 Created
5.43 kojisvista
5.43 Dr J
5.36 timquick
5.30 kudoukun
5.25 looop
5.24 integral
5.17 michl
5.15 Greenhorn91
4.97 fletch85
4.50 junobeach
4.42 charlatan1983
4.37 Nippelking
4.29 seeb
3.99 shadolin
3.98 Skerdikas
3.85 bivo
3.83 Jouster III
3.65 RyanIsntLife
3.60 meme12
3.43 The Referee
3.43 NikkeKnatterton
3.35 sews4wampum
3.34 Chris is King1
3.30 itslikeisaid
3.23 Troy11
3.22 AI7
3.18 Bart Lee
2.98 entrope
2.81 unlucky4bunny
2.77 infinity5
2.67 PRESIDENT N° 1
2.65 Rebel9
2.65 homo dude
2.52 burcin
2.44 Beer Me!
2.41 ivv
2.24 Smoke Two Joints
2.18 Soromon
2.16 Larry The Bull
2.14 Loobee
2.12 rushwing
1.51 SHO-GUN
1.30 EddyB
1.00 amazing grace
0.76 orestis85
0.75 B4M069
0.63 no_name2
0.38 franklyghost
0.00 Arnas Bro