England's Donald remained hopeful of a comeback: "Two shots in foursomes is nothing, " he said.
Indiana Republican Dan Burton told his colleagues in 1995 that there was nothing wrong with charity foursomes, because they were drawn by lottery.
Elsewhere in the foursomes, Tiger Woods and partner Steve Stricker beat Australian Geoff Ogilvy and Japan's Ryo Ishikawa six and four.
The opening foursomes will play to a finish when the action resumes at the planned starting time of 0745 BST on Saturday.
In greensomes, both players in each team drive off before selecting the best drive and then playing alternate shots as in a foursomes.
One possibility: complementary broadcasts on Golf Channel, such as featured foursomes or alternate on-course commentaries, while the main network broadcast is airing live.
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The third session will comprise of two foursomes and four fourballs later that day, with all 12 singles set to be played on Sunday.
The event continues with five more fourball matches on Friday, followed by four greensomes and four foursomes on Saturday and 10 singles matches on Sunday.
Trailing by three points after losing all three morning foursomes at Formby, the US team won five out of six of the afternoon singles matches.
In foursomes, Westwood has six wins and three halves from 11 matches, while in fourballs his return is six wins and two halves from 12.
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He ended up playing four matches but only managed a half with Robert Karlsson in the day one foursomes contest against Phil Mickelson and Anthony Kim.
He has a career record of 14-6-4 in the Ryder Cup, and has never lost a foursomes match, but has played in only 17 tournaments this year.
For the first two days, each captain divides his teams into pairs which compete in a variety of 18-hole match play competitions known as fourballs and foursomes.
For instance, putting Laura Davies and Spanish rookie Paula Marti out top in both matches meant that they hardly had time to down a drink between the morning foursomes and afternoon fourball matches.
The three-day matchplay event at Rich Harvest Farms near Chicago will begin with four fourball matches followed by four foursomes matches on Friday, with the same pattern on Saturday and 12 singles matches to conclude on Sunday.
His side picked up 3.5 of four available points in the afternoon alternate shot foursomes, having earlier won three of the morning's four greensomes to leave them 12.5 points to 5.5 points ahead with 10 singles matches remaining on Sunday.
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