TSM vs BLINN - TSM Sherb

I missed the TSM vs BLINN match last week and I saw that Sherb was in place for aproto for the last two games. Could anybody catch me up as to why aproto couldn't play? And will he play tomorrow ?

Thanks

emergency sub. aproto had a health scare and sherb subbed in mid-map. he said he's ok. i would assume he will play the next game