Europe seized command of the Ryder Cup overnight, winning three foursomes matches and halving a fourth to extend its lead to 10-6 going into the final day's singles.
For the second day in a row, Europe grabbed 3 1/2 points from the afternoon alternate-shot matches at Gleneagles.
The United States won 2 1/2 points in the morning fourballs to cut the lead to 6 1/2 - 5 1/2.
Twelve singles will be played on Monday (NZT). Europe needs 14 points to retain the trophy and 14 1/2 to win it outright.
The United States led 10-6 two years ago at Medinah, but Europe pulled off a stunning comeback to win 14 1/2 - 13 1/2. That was branded the "Miracle of Medinah." The Americans will need their own remarkable last-day rally to steal the cup back.