OAKMONT, Pa. (AP) — U.S. Open week is off to a soggy start at Oakmont. Players are starting to arrive equipped with umbrellas and expectations of a typical tough test. Jordan Spieth was among the early arrivals. He played the front nine Saturday and got in 11 holes Sunday. The rough is every bit as deep and thick as advertised. Spieth says it’s one of the few U.S. Open courses that doesn’t need a lot of work to be ready for a major. He says mistakes are bound to happen. The key to Oakmont is not to compound the mistakes.