I have noticed in 2 seasons of keeping track, that the accounts that are tanking dont have as many injuries, while those going for the title have more.

year 1, all 4 title accounts had more than the one account tanking.
year 2, all 4 tanking accounts had more than the one going for the title.

year 3 should confirm something, but when I dont spend reds/greens/blues, it seems I get less injuries.