The 54-year-old Inkster, making her Legends Tour debut, won the 1999 U.S. Women's Open at Old Waverly.
''I had a lot of chances,'' Inkster said. ''I three-putted for bogey at the fifth and three-putted for double bogey at the seventh, so Laura owed me a little and I made some putts on the back nine. It all works out.
''I enjoyed playing. I had a blast hanging out with the gals I grew up with and went to college with and played a lot of golf with. It's been a lot of fun. I'd love to come back if they invited me back.''
Sherri Steinhauer clinched the cup for the Americans, beating Alicia Dibos, 69-70, with a 20-foot birdie putt on the par-4 18th. The U.S. leads the series, 7-1-1.
Beth Daniel, Barb Mucha, Christa Johnson, Meg Mallon and Nancy Scranton also won matches for the United States. Daniel topped Lorie Kane, 72-74, Mucha beat Dawn Coe-Jones, 71-73, Johnson defeated Mieko Nomura, 71-75, Mallon edged Jane Crafter, 68-70, and Scranton beat Helen Alfredsson, 74-75.
Trish Johnson, Wendy Doolan and Liselotte Neumann won matches for the World team. Johnson, the Ladies Scottish Open winner last month at a Ladies European Tour-record age of 48, beat Laurie Rinker, 67-71, Doolan routed Val Skinner, 69-80, and Neumann beat Rosie Jones, 68-70.
Americans Sherri Turner and Pat Bradley halved her matches. Turner tied Jenny Lidback at 74, and Bradley matched Alison Nicholas, also at 74.
The teams were tied at 12 after playing nine-hole better-ball and alternate-shot matches Saturday.