| John McDermott, Jr. | |
|---|---|
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| Personal information | |
| Full name | John J. McDermott, Jr. |
| Born | August 12, 1891 Philadelphia, Pennsylvania, U.S. |
| Died | August 1, 1971 (aged 79) Philadelphia, Pennsylvania, U.S. |
| Sporting nationality |  United States |
| Career | |
| Turned professional | 1908 |
| Professional wins | 7 |
| Best results in major championships (wins: 2) | |
| U.S. Open | Won: 1911, 1912 |
| The Open Championship | T5: 1913 |
John J. McDermott Jr. (August 12, 1891 – August 1, 1971) was the first U.S.-born golfer to win the U.S. Open, in 1911 and 1912, and he remains the youngest player to win the event, at age 19, as well as the second youngest to win any of golf's four major tournaments after Young Tom Morris. He was the first player to break par over 72 holes in a significant event, which he did at the 1912 U.S. Open. He was one of the world's top players between 1910 and 1914.