
Defending champion and world No. 1 Dustin Johnson was the biggest casualty of the halfway cut in the 117th US Open at Erin Hills.

Second and third-ranked Rory McIlroy and Jason Day also made early exits as the deep fescue rough took its toll on wayward shots.

England's Paul Casey maintained his momentum from day one to card a 71 for seven under overall and in a four-way share of the lead.

Tommy Fleetwood was another Englishman in a share of the lead at seven under after two rounds Friday.

American Brooks Koepka climbed into a share of the lead with rounds of 67, 70.

Left-handed American Brian Harman completed the quartet in the lead, all searching for a first major title.

Masters champion Sergio Garcia shot 71 to edge to three under and a tie for 18th, the highest-placed player with a major title to his name.

Japan's Hideki Matsuyama was on target to break the major championship scoring record of 63 at seven under after 13 holes, but five pars coming home gave him a 65.

Masters runner-up Justin Rose, the 2013 champion, was another big name heading home early from Wisconsin after ending two over.

Two-time Masters champion Bubba Watson seems to struggle in the other majors and the left-hander and his yellow ball missed the cut at Erin Hills with rounds of 75, 73 for four over.