Rory McIlroy, Scottie Scheffler struggle in 2nd round of U.S. Open

(Photo credit: Jim Dedmon-USA TODAY Sports)
First-round co-leader Rory McIlroy of Northern Ireland shot 2-over-par 72 in Friday's second round of the U.S. Open at Pinehurst, N.C.

It appeared it would be another round with a high degree of difficulty as golfers played Pinehurst No. 2 on a day with rising temperatures.

Among those who struggled was world No. 1 golfer Scottie Scheffler, who'll be in danger of missing the c