A$AP Yams was 5'10
I say "was" because unfortunately ASAP Yams passed away on January 18, 2015.
The cause of death is still not official, although his crew have denied that it has anything to do with drug overdose.
To be honest though, if you consider the fact that he was ONLY 26 years old, and he admitted to having drug problems before (he OD'd at Coachella festival after taking Xanax and Codeine) - I would say that drug overdose is still the most likely cause of A$AP Yams death