Here are the top 100 ranked by kills per root game. If you are not in the top 100, but want to make your deadliness known, post to this thread.

13.52 wertrew
10.72 Drucifer85
10.38 NardSausage
10.09 tantywhu
9.72 avesano
9.57 spanky6
9.48 Yepa
9.04 tstj
8.80 Gummitarsan
8.75 Lee Mur
8.73 kostka4
8.52 barry gateaux
7.89 farq
7.78 hcdug
7.70 Mikkis
7.69 Beach_Bum_13
7.51 kostur
7.45 panthar
7.36 Qazi Legend
7.29 iho kladrst
7.07 peter luftig
6.99 Bigusdickus
6.93 kapouaii
6.93 69JJ69
6.88 TimeR_rW
6.88 arkenkor
6.79 MadMadMad
6.60 slim p
6.58 Havefun45
6.47 lipos
6.45 peacefrog
6.27 Bandi
6.27 BUS513
6.21 NextJ
6.12 golek
6.07 Bart Lee
5.96 kluczykk
5.86 Scammer
5.77 jaxa1
5.76 ffbsensei
5.73 libamaj
5.69 kolaps
5.60 masticore
5.55 Nazgra
5.50 toms
5.41 xXxJozefxXx
5.35 SmokingJoker
5.35 Magno 123
5.32 Seige
5.19 junobeach
5.14 MNML
5.12 Volvic
5.09 Loo Moo
5.09 chronogame
5.04 Hong Kong
4.93 panzer
4.92 pooch723
4.91 Vinter
4.91 marcostif
4.86 MagicTeddyG
4.82 dimitris
4.44 Masta ov Deth
4.39 kenseids
4.36 Soromon
4.35 tetyos
4.33 Andro66
4.29 Gonna4v4U
4.29 Nerd Alert
4.24 happytoscrap
4.23 LOren13
4.22 ireneo
4.12 Szczeepan
4.06 rofarah
4.04 Verano73
3.94 M3r0w1ng3r
3.86 caligula1
3.81 Three_Blind_Dice
3.73 kdiceplaya!
3.73 BAMMBI
3.58 EddyB
3.54 rushwing
3.30 PND
3.10 Piano
3.07 turekbeda
3.05 estan leban
2.69 Rastaa Man :)
2.41 Chris is King1
2.36 jurgen
2.25 Hobbygaertner420
2.09 Mitsi the cat
1.80 val
1.60 Yuck_Fou3
1.51 Lil Johnson213
1.51 S3Z0
1.34 sews4wampum
1.00 gtzlat
0.85 spman
0.58 Tim Wonka
0.00 Arnas Bro
0.00 DonnieScribbles