Paddy Power has the United States (13/8) favored over Ecuador (7/4).
Just Bet has Ecuador at +170 favored over the United States at +176.
5Dimes has Ecuador at +176 favored over the United States at +184.
BetDSI has Ecuador at +170 favored over the United States at +176.
William Hill has the two nations even at +170.
Ecuador finished in second in Group B, behind Peru, with five points. Ecuador opened group play with a scoreless tie against Brazil, tied Peru, 2-2, and defeated Haiti, 4-0.
The two nations faced off in a friendly prior to the Copa America on My 25th in Frisco, Texas. The U.S. won the match, 1-0, thanks to a 90th minute goal from Darlington Nagbe.
Should Ecuador be favored (albeit only slightly)? Although they are rated higher by FIFA and have an (arguably) more talented roster, the U.S. is on an upward swing and will be playing at home. It's difficult to quantify the effect home field advantage will have on the match, but it should be significant. Seattle fans tend to pack the house at CenturyLink Field and will provide vocal support.
As it stands right now, the match is a toss up and should be an exciting one to watch.
PREDICTION: U.S. defeats Ecuador, 3-2.