| Most improved players during the past 12 months | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rank | last/PR | old/PR | PR/inc | Name | Rank | last/PR | old/PR | PR/inc | Name | Rank | last/PR | old/PR | PR/inc | Name |
| 1 | 51.80 | 47.96 | 3.84 | Brown, Edith Joy | 3 | 56.69 | 55.95 | 0.74 | Tokarz, Joan | |||||
| 2 | 58.62 | 57.32 | 1.30 | Walker, Page | 4 | 58.85 | 58.68 | 0.16 | Van Arsdale, Marilee | |||||