|Safeway Open, second-round leaderboard|
|-15 Piercy (US); -12 Wagner (US), Casey (Eng); -11 Merritt (US); -9 Laird (Sco), Kizzire|
|Selected others: -6 Mickelson (US); -5 Grillo (Arg), Finau (US).|
England's Paul Casey will start the third round of Safeway Open three strokes behind leader Scott Piercy.
Casey was 11 under after 12 holes when play was suspended in Napa, California, in round two, three behind Piercy.
The 39-year-old was out early on Saturday to complete his round and managed to close the gap after a birdie on the par-five 16th hole.
However, Piercy responded with a birdie on the 17th to maintain a strong lead over Casey and USA's Johnson Wagner.
Scotland's Martin Laird is tied fifth, six shots off the lead.
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