Lahiri and Thongchai Jaidee lost their match to the in-form Rickie Fowler and Jimmy Walker 5&4 in the first match to give the US team their first points.
The US led 4-1 after the first day, the biggest lead they have held in the competition since 2007.
Lahiri, who was out rooting for his teammates after his match said, "You don't just play for yourself. You play for the team, and unfortunately I didn't play my best today, and hopefully I come up with my game whenever I'm asked to."
Price put his sole winners from Thursday, Oosthuizen and Grace, against World No.1 Jordan Spieth and Dustin Johnson in the opening Fourballs.
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Fowler and Walker will clash with Lee, who has been paired with Korean Sangmoon Bae, who sat out Thursday, while Zach Johnson and Phil Mickelson, who shook hands stylishly after every good shot and kept feeding off each other, meet Australians Adam Scott with World No.2 Jason Day.
Price said, "Charl is doing really well. He had a day off yesterday. I think he spent the majority of the day in bed yesterday. The doc went to see him and he felt a lot better. Hit some balls this morning and chipped and putted, so that's good. He gave me the green light at lunchtime today. He said he's ready to go."
Thursday Results: Foursomes: (First named winners): Watson/Holmes (U.S.) bt Scott/Matsuyama (International), 3&2 Oosthuizen/ Grace (Int'l) bt Kuchar/ Reed, 3 & 2, Fowler/ Walker (U.S.) bt Lahiri/Thongchai, 5 & 4, Mickelson/Z Johnson (U.S.) b Day/Bowditch, 2-up Spieth/D Johnson (U.S.) bt Lee/ Leishman, 4 & 3 US Lead Internationals 4-1.