The rest of the field was still chasing Sweden's Helen Alfredsson when the rain-delayed second round of the US Women's Open was finally completed yesterday at Indianwood, near Detroit. Alfredsson shot a two-under-par 69 on Friday for a record 36-hole total of 132, 10 under par. That was good enough for a four-stroke lead over Britain's Laura Davies. Davies fired her second straight 68, rolling in a par putt on the 18th just as darkness fell. Davies, winner of three US LPGA events this season and the tour's top money-winner, won the US Women's Open in 1987 before joining the US LPGA. 'The driver was working very well,' said Davies, who eagled the eighth hole. Pamela Wright put together the most impressive second round. Wright, starting three over, birdied five straight holes - 9 to 13 - en route to a six-under- par 65. Her 30 on the back nine was the lowest nine-hole score in US Women's Open history. Alfredsson shattered the US Open record by two strokes with an eight-under 63 in the opening round over the 6,244- yard course. Pat Bradley shot 69 for a one-under 141 despite losing her caddy on the ninth hole. The caddy, Robbie Caliolo, broke a leg while trying to jump a fence.