The Pinoy Phenom was defeated by two Korean pro-gamers at the world stage, x6.Sleep (ex-SlayerS) and FnaticRC.aLive (ex-Team SCV Live), in the same day back on February 17, 2011.

Mski.EnDerr, despite his good career stats in both ZvZ and ZvT, recently lost to the two said Korean pro-gamers, by 
Sleep at the Cyber Sports Network "The Rundown #11" and by one of the top Korean Terrans and current GSL Code S semifinalist, 
aLive at the North American Star League qualifier.
NASL S3 Qualifiers Ro32 Enderr vs aLive recap
On the NASL qualifiers, the Code S Terran, aLive, eliminated EnDerr with a 2-0 win. EnDerr's road to the North American Star League was crushed with this loss. But EnDerr didn't go down so easily. EnDerr managed to put on a tight game on the first game which is a very amazing display of skills considering he was against one of the world's top players.
CSN Rundown 11 recap
After ravaging on his opponents with a flawless record (getting a 2-0 on JakeBake and LgNJimRiSiNg)on the CSN rundown #11, was stopped by the korean progamer Check Six's Sleep. Sleep 3-0'd EnDerr to end the filipino's clean streak and took the $100 prize for this week's tournament.
However, due to The Rundown's rules, champion and runner-up are automatically seeded again for the following week's The Rundown. Thus EnDerr has been invited to appear again in CSN The Rundown #12.
Will he be able to exact his revenge on Sleep?
These losses have not been easy on EnDerr. However he is still determined to step up to the world stage and show everyone what a Filipino is capable of.