5k ranked games this season?

Just wanna know something because i just ran into this guy with 5k ranked games this season

http://na.op.gg/summoner/champions/userName=umechaduke

Not sure what to call this because the way he played was super weird and i was trying to talk to him but he didnt say a word.

I wanna know how he gets the KDs he does with the amount of games he is playing per champ. I vsed him when he was malphite and its not like he was going for KD he still ulted in and stuff but just in lane he suicided to me twice because once my support went onto their adc he chased me to tower and just died to me but before that he would just do nothing maybe some poke now and again.

Dont think its a bot no way a bot can last that long in ranked.

and his top 3 champs all have 1 million points but all lvl 5 thats some serious game time right there.