Supplemental Table 2. Comparison of fitness values determined with en masse competition experiments to fitness values determined in individual competition experiments.			
			
ORF	Individual Fitness	Mass Fitness	Nutrient Limitation
YCR071C	-0.095	-0.196	G
YER007-A	-0.084	-0.177	S
YER007-A	-0.084	-0.177	S
YKL155C	-0.048	-0.243	G
YEL002C	-0.031	-0.155	P
YNR024W	-0.028	-0.001	S
YNR024W	-0.028	-0.001	S
YEL038W	-0.025	0.007	G
YLL018C-A	-0.015	-0.004	G
YEL038W	0.002	-0.007	S
YEL038W	0.002	-0.007	S
YJL179W	0.003	0.072	G
YDR469W	0.023	0.167	P
YNR024W	0.032	0.004	G
YEL038W	0.037	0.048	P
YJL141C	0.042	0.111	G
YJL140W	0.047	0.11	G
YJL141C	0.053	0.111	P
YER177W	0.067	0.158	P
YEL018W	0.071	0.123	P
YDL013W	0.106	0.131	P
YDL166C	0.108	0.197	P
YNR024W	0.108	0.045	P
YLR320W	0.148	0.095	S
YLR320W	0.148	0.095	S
YDR325W	0.155	0.094	S
YDR325W	0.155	0.094	S
YDR182W	0.184	0.24	G
YKL138C	0.218	0.203	P