The 1914–15 National Challenge Cup was the second tournament of the modern-day Lamar Hunt U.S. Open Cup. Many more teams - 80 - competed in 1915 after the success of the 1913–14 tournament. St. Louis and California were the only major soccer-playing regions without a representative. Bethlehem Steel won the tournament.

Bethlehem Steel Football Club (1907–1930) was one of the most successful early American soccer clubs. Known as the Bethlehem Football Club from 1907 until 1915 when it became the Bethlehem Steel Football Club, the team was sponsored by the Bethlehem Steel corporation. Bethlehem Steel FC played their home games first at East End Field in Bethlehem, Pennsylvania, in the Lehigh Valley, then later on the grounds Bethlehem Steel built on Elizabeth Ave named Bethlehem Steel Athletic Field.