Current Bug
Presently, the recommended play list allows you to duo with someone outside of your 1 tier limit. for example, I (gold 5) can duo with my Bronze one friend just because hes in my recommended players invite list, I can invite him. Same thing goes with my Diamond 4 friend, hes on my recommended invite list so I can invite him. So if you have anyone you wanna duo with, get them on the list and bam, duo partner. Just thought id point this bug out ^.^