By 1902 he had become the professional at the Gog Magog Golf Club near Cambridge. In a friendly match against Tom Vardon at Sandwich on 27 May 1903, Strong made a hole-in-one (likely wind assisted) on a par 4 hole. He entered the 1903 Open Championship held at Prestwick Golf Club, South Ayrshire, Scotland, but failed to advance past the half-way cut. In the 1904 Open Championship, again held on his home course at Sandwich, Strong opened with a first round 93—in windy and cold conditions—but could only improve to 88 in round two when the weather improved. He ended up missing the cut, by 13 strokes, which came at 168. In 1905, he emigrated to the United States and became the professional at The Apawamis Club in Rye, New York, a course featuring pronounced land forms and blind shots. When you combine this with his time spent at Royal St George's, the course nearest his home where he learned to play golf, you start to see a lot of his architectural influence. In 1911, he moved to Inwood Country Club and remodeled the course over several years eventually leading to the course hosting the 1921 PGA Championship and the 1923 U.S. Open. On 16 September 1905 Strong partnered with 18-year-old Jerome Travers to tie for second place, shooting 72, in a four-ball tournament—part of the 1905 Metropolitan Open—that was held at Fox Hills Golf Club on Staten Island. Engineers Country Club was founded in 1917 by a group of engineers from Manhattan. The club features a bold course with titanic undulating green complexes and wide hole corridors built on terrain that at times slashes upward or cascades sharply downward to greens protected by dramatic bunkers. Within those features are subtle touches that only those familiar with the course recognize: the well-placed roll in the fairway or the slight green contouring that sends putts in directions that seemingly defy the law of gravity. Strong was able to complete construction of the golf course in only 27 months time. Devereux Emmet remodeled part of the course in 1921. The course hosted the 1919 PGA Championship and the 1920 U.S. Amateur. A sports writer of the time wrote in August 1920: "No young club in the history of golf, let it go back 400 years, has come in for as much discussion and comment as Engineers. The main nerve test will be on the greens. You will find strong men weeping as they finish a round".