Webb Simpson fired another six-under 65 to lead the RBC Heritage, while Brooks Koepka continued his strong start on Friday.

Simpson, the 2013 runner-up at the PGA Tour event, managed nine birdies and three bogeys, shooting a second straight 65 to get to 12 under.

The American holds a one-stroke lead over Bryson DeChambeau (64) and Corey Conners (63) after the second round, which was suspended for two hours due to dangerous weather.

Conners' bogey-free 63 was the equal best second round, alongside Jhonattan Vegas and Tyler Duncan.

DeChambeau, meanwhile, produced a stunning finish to his round, making six birdies on his final nine holes.

A 7-under 64 in Round 2 @RBC_Heritage has @B_DeChambeau T2 at -11. pic.twitter.com/SVPYPe5QuH
— PGA TOUR (@PGATOUR) June 19, 2020

Ryan Palmer (67) and Matt Fitzpatrick (66) are at 10 under, sharing fourth spot on the leaderboard.

Koepka followed up his opening-round 67 with a 66 to be at nine under and in a tie for sixth alongside Abraham Ancer (64), Vegas, Matthew NeSmith (67) and Ian Poulter (69).

SG: Off-the-Tee - 1st
SG: Putting - 9th@BKoepka got it done off the tee and on the greens Friday @RBC_Heritage. pic.twitter.com/QJh1KC6jsL
— PGA TOUR (@PGATOUR) June 19, 2020

Dustin Johnson managed a five-under 66 to be at eight under, two shots better off than Jordan Spieth (70).

World number one Rory McIlroy got going with a six-under 65 that saw the Northern Irishman climb into a tie for 45th at five under.

Rickie Fowler and Jason Day were among the players to miss the cut on a day which saw Nick Watney withdraw after testing positive for coronavirus.