The main objective of the multi-adversity resistance (MAR) cotton genetic improvement program is to breed, develop and release MAR cotton strains and varieties for the Southwest USA cottonbelt. These lines combine high yield potential and early maturity, improved fiber and seed quality, drought tolerance, higher levels of resistance to insects and pathogens, and stability and wide adaptability to the diverse Texas environments. The MAR germplasm is extensively field tested at ten locations which include the major cotton growing regions from the Rio Grande Valley to the Rolling and High Plains, and represents a wide range of diverse environments. Severe drought and abnormally high temperatures occurred at most locations which effected yield, boll size and fiber quality. This allowed for the identification of new MAR-7B and MAR-8 superior strains with drought tolerance. The objective of this paper is to compare among the MAR germplasm the effect of this year's drought on yield and fiber quality.