Kiwi golfer Danny Lee has shot up the leaderboard after a blistering six-under 65 in the second round of the Rio Olympics golf tournament.

Lee has produced the best round of the day so far to move from one-over at the start of the day to finish at five-under at the midway point, five shots off the leader Marcus Fraser of Australia (10-under).

The Rotorua golfer finished strong with four straight birdies on the back nine.

Lee sits in a share of sixth place, three shots from bronze medal place.

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Belgium's Thomas Pieters is second, a shot behind Fraser after a five-under 66 while British Open champion Henrik Stenson is third at eight-under.

New Zealand's Ryan Fox shot a two-over 73 to slip down the leaderboard to two-over in a tie for 33rd.