Please somebody who keeps up with LCS, Riot Jatt's voice sounds very different

It's probably the audio capture hardware, for the slight difference. I honestly think it's his same voice all three videos.

Omg thank you I thought I was the only one who noticed,as someone who watched almost every week his voice has DEFINITELY changed! I am 100% sudden of it.

He has said in the past that he had some speech problems and that he was seeing a "talking" coach iirc, so my guess is that he learned the proper way to talk.

His voice changed rather significantly between seasons. It's weird, not bad, just weird.