Original posts were correct, but blame the players as usual. something is actually off with the leagues, or people are spending diamonds a lot and skewing the ranks. I used to make silver every year pretty easily, just showing up and doing the daily collection and all the quests and going for the best yardage moves (not highest prize percent.)
Not this year. I have done all the quests and dailies, even won 50 footballs in incidents 4 times and spent 700 diamonds on a few extra footballs and I'm clinging to bronze with my fingernails. I can't imagine how much was spent for people reaching silver, but I guess this is where all the diamonds farmed with free attrition in GBG are going.
I'm doing the event on two worlds
World 1: 2,046 yards
World 2: 1,604 yards
Both worlds are currently in Silver League. Both worlds were Free to Play + Ultimate Coach.
World 1 I logged in almost every day. World 2 I definitely missed at least a few days so have less currency to work with
Without the Ultimate Coach it'd quite likely be impossible to reach Silver League. So yes, expect to spend at least a small amount of diamonds if the Leagues mean something to you. But at only 150 diamonds it's more than viable for at least
*some* Free to Play players without additional diamond expenditure. I say some because in the end it's still only the top 5% of players that get into Silver. So even if you did everything exactly the same as those in the Silver League, it's likely going to be the Incident currency that determines who gets into Silver and who doesn't
That being said, I wouldn't be surprised if some worlds have a higher average expenditure and be harder to get into Silver due to that