Fame changes?

Although im not always at the tombs pvping i have been there quite alot...it used to be that i would get fame for winning the second match on till i lost...and occasionally the first match though for 1 st match it appeared to be random...now i can win 3-4 matches in a row...but never get any fame...this has happened on 3 different chars...ive looked all over the updates and forums everywhere for the answer but may have missed it...if any can tell me any changes if they have been made and where i can go to read the details i would greatly appreciate it...kinda difficult to get invited into a ranked grp if my fame doesnt ever change anymore.