Lang, earlier in the day, defeated seven-time USGA champion Carol Semple Thompson in a rematch of the 2005 final, 3 and 2. Lang never trailed in her match against Thompson, as she won the second hole and was never headed, leading by as much as 5-up after 10 holes.
Her semifinal confrontation with Wiesner was just the opposite. After losing the first hole, Wiesner squared the match on two and took a one-up lead after three holes. Lang battled back, squaring the match on four and six, but Wiesner birdied the eighth and parred the 10th for a 2-up lead.
'To me, the back nine is longer and harder, so I thought that with my length that I would have an advantage,' said Lang. 'But I haven't had many matches go past 13, so I hadn't played some of those holes in a long time, and that was worrying me a little.'
Lang closed the gap to one by birdieing the par-3 12th at Sea Island Golf Club's Seaside Course. Lang was still one down after both players birdied the par-5 15th. She squared the match with a bogey on 16 and then birdied the par-3 17th, her third two of the day to take a 1-up lead. Lang parred the final hole while Wiesner made bogey for a 2-up win.
In contrast, Anna Schultz cruised into the championship match, as she dispatched Deborah Anderson, 6 and 4. After halving the opening hole, Schultz made birdie on two, four and nine to go 5-up at the turn. She closed out the match with a birdie on the 14th to reach the final of a USGA championship for a second time. Schultz was the 2000 U.S. Women's Mid-Amateur runner-up.
'I just felt confident coming into this week,' she said. 'I knew my game was good, and it was just a matter of figuring out the greens.' Schultz won the Southern Golf Association's Senior Women's Amateur Championship just before coming to Sea Island.
Just the opposite, Schultz, 51, of Rockwall, Texas, although never trailing against Patty Moore in the earlier quarterfinal match, was able to advance 1- up. With the match all square after 14 holes, Schultz birdied the 15th and then parred the final three holes for the win.
Lang, 51, of Weston, Florida, is trying to become the first to successfully defend her title since Thompson won four consecutive championships from 1999-2002.
Thursday's championship match will be an 18-hole final.
The USGA Senior Women's Amateur is open to female amateur golfers who reached their 50th birthday on or before October 7, 2006, and have a USGA Handicap Index not exceeding 18.4.