Pick 2 RB to start week 7?

well i have both mathews,who i think can get me at least 20 points this week and dewill playing for me this week,i took out ryan torain for dewill,sumting gives me the feeling he will get sumtin like 16 at least,but you have ray rice against the bills in baltimore,and there is no way u can sit him in this matchup really,so i would say rice and mathews get the go