not once have i got a packers ring

I find SB 30 (GB) & SB 37 (TB) rings to be the lowest drop rate by far, darn near impossible to get for me actually.

I have 6 player sets waiting only for those two rings, and they have been waiting for about a month or so now.  Every time the RTTR event starts, I spend every single stamina point I have on those events all day long, staying up to the middle of the night to make sure and hit the last event of the day as well.  I also calculate my EXP and make sure to hit one or two other events with my very last bit of stamina to ensure I level up and refill my stamina bar during the RTTR events.  I've also spent 600 madden cash on stamina refills.  I have also run ring re-roll set 92 times.  

Still, no love on the GB & TB rings.

It's the same for my second account as well.

I keep picking up the same rings every time:

1. The same 4 golds in rotation
2. 8 out of 10 elite ring drops will give me that stupid SB 18 (LA Raiders) ring
3. 1 out of 10 elite ring drops will be SB 16 (49ers)
4. 1 out of 10 elite ring drops will be SB 26 (Redskins)

Turn 5 SB 18 (LA Raiders) rings into re-roll.....surprise, I get another SB 18 (LA Raiders) ring

So no, you're not alone my friend.  The odd thing to me is that forum posts are filled with random players who swear they are picking up 3, 4, 5 or more of these rings at one time.  Either they are trolling or they are the luckiest SoB's on the servers.  Either way, keep grinding my friend.  Don't expect EA to restructure the loot tables for those any time soon.