Quinney -- the 2000 U.S. Amateur champion and a former Arizona State player -- is at 16-under 197 for his first 54-hole lead on the PGA Tour.
Baddeley, an Australian, matched the low round of the day with a 7-under 64, trimming a six-shot deficit to just two despite hitting only five fairways Saturday. Baddeley, 14-under 199, missed the cut in three of his previous four starts here.
The second round was completed Saturday morning after play was suspended due to darkness Friday.