This is based on (FIFA points for a win) / (actual effort from Elo rating).
I took into account only teams that would bring at least 200 points for a win.
Interesting (for me at least) to see one of the worst teams to play against has scheduled friendlies in May and June against two of the best teams to play against, one of them against the top team in the list below.
Looking to improve your FIFA ranking? Use the e-mail address from my profile to contact me. A word of warning - my services are not for free.
Top 20 best teams to play against after the May FIFA ranking is published:
Cape Verde Islands
Worst teams to play against: