The two-time USA Walker Cupper managed to move on with a 19-hole victory over Michael Reardon. The match was one of 28 completed on the 6,967-yard, par-70 Seaside Course.
Kuehne's approach at the 19th hole from 123 yards with a 54-degree wedge was perfect, stopping 3 feet from the flagstick. Reardon's long birdie putt came up just short and Kuehne holed his putt to secure the win.
'This is a golf course where basically everybody has a chance,' said Kuehne, 'It doesn't really favor anybody. I hit a lot of irons off the tee.'
Among those who failed to finish when play was suspended for the day at 7:15 p.m. (ET) due to darkness were co-medalists Paul Simson and Jeffrey Wilson.
Wilson was all square through 14 holes in his match against Randy Elliott. Simson was trailing Michael McDermott, 2 down, through 15 holes. Both Elliott and McDermott survived an 18-for-15 playoff earlier on Monday to get into the 64-player match-play draw.
Two-time British Amateur champion Gary Wolstenholme of England was 1 down through 17 holes in his match against Randy Haag when play was suspended.
After the conclusion of the four suspended matches, the second and third rounds of match play are scheduled to be played on Tuesday, with the quarterfinals and semifinals on Wednesday. The 36-hole final is set for Thursday.
The U.S. Mid-Amateur is one of 13 national championships conducted annually by the United States Golf Association, 10 of which are strictly for amateurs.