|Country of Birth||Brazil|
|Team||Start Date||End Date||Role|
|World Wide Wipers||11/2011||6/2012|
|Esquadrão Classe A||2/2014||3/2014|
Mateus "yeTz" Vieira is a retired Brazilian League of Legends player, former Mid Laner for JAYOB e-Sports, currently working with Keyd Stars as a streamer. He is also one of the owners of Team Innova.
yeTz started playing in 2011 and was one of the first competitive players in Brazil.
After leaving the competitive scene in March 2015 and working as a streamer, in October he announced a creation of a new organization, called Team Innova. The organization is set to announce teams for various games on a later date.
- Known for his Twisted Fate, which frequently draws bans in competitive play.
- Known for his catchphrases like "Holy Xerecas", "Vrau!" and "Tá trollando, certeza" (He's trolling, I'm sure).
- Claimed to be on a 'vegetative state' since leaving competitive play for the first time.
- His stream is very popular in Brazil, due to his use of humour.
|2012-11-25||GeForce GTX League of Legends Invitational Brasil||vTi Nox 2 : 0 paiN Gaming|
|2012-10-13||Riot Season 2 Brazilian Championship||vTi Nox 0 : 2 vTi Ignis|
|2012-02-07||IEM Season VI - Global Challenge Sao Paulo||wWw 1 : 2 Noobs da Net|