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Well I have heard of them, also looked up TLO mentioned above, he actually did get RSI and had to take months off.

"Liquid regretfully announces that Dario “TLO” Wünsch will be unable to play for the next few months due to the Carpal Tunnel Syndrome he experiences in both hands. He will however continue to be involved with E-Sports even as he takes a break from gaming to give his wrists time to heal. Sadly, this means that he will not be attending Dreamhack Summer or the Homestory Cup III as a player."