Chris Garlock

"Managing editor of the American Go E-Journal and Vice President of Communications for the American Go Association ... An amateur 3-dan" -- quoted from his biography in the book AlphaGo to Zero: The Complete Games (Vol 1), of which he is a co-author

He is also the junior co-commentator to Michael Redmond in the AGA's AlphaGo commentary series on Twitch (archived on the AGA's Youtube channel). This position follows his appearance alongside Redmond in the English broadcast of the Lee Sedol -- AlphaGo match.