Pieces Upgraded Leaderboard
| # | Player | Pieces Upgraded |
|---|---|---|
| 1901 | 9 | |
| 1902 | 9 | |
| 1903 | 9 | |
| 1904 | 9 | |
| 1905 | 9 | |
| 1906 | 9 | |
| 1907 | 9 | |
| 1908 | 9 | |
| 1909 | 8 | |
| 1910 | 8 | |
| 1911 | 8 | |
| 1912 | 8 | |
| 1913 | 8 | |
| 1914 | 8 | |
| 1915 | 8 | |
| 1916 | 8 | |
| 1917 | 8 | |
| 1918 | 8 | |
| 1919 | 8 | |
| 1920 | 8 | |
| 1921 | 8 | |
| 1922 | 8 | |
| 1923 | 8 | |
| 1924 | 7 | |
| 1925 | 7 | |
| 1926 | 7 | |
| 1927 | 7 | |
| 1928 | 7 | |
| 1929 | 7 | |
| 1930 | 7 | |
| 1931 | 7 | |
| 1932 | 7 | |
| 1933 | 7 | |
| 1934 | 7 | |
| 1935 | 6 | |
| 1936 | 6 | |
| 1937 | 6 | |
| 1938 | 6 | |
| 1939 | 6 | |
| 1940 | 6 | |
| 1941 | 6 | |
| 1942 | 6 | |
| 1943 | 6 | |
| 1944 | 6 | |
| 1945 | 6 | |
| 1946 | 6 | |
| 1947 | 6 | |
| 1948 | 6 | |
| 1949 | 6 | |
| 1950 | 6 |
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