The 2020 U.S. Open is proving a formidable task for golfers at the Winged Foot Golf Club in Mamaroneck, N.Y.At the start of Round 2 competition on Friday, only 10 golfers had a score better than par, while only nineachieved par. And the conditions stoodto get harder for golfers as the tournament progre sedand the greens gotfaster.Of course, there have already been plenty of highlight-reel...