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USMS Top 10 Swims by Mark Williams
No individual Top 10 swims were found for Mark Williams.
USMS Top 10 Relay Swims by Mark Williams (1)
Below are all recorded relay Top 10 achievements for Mark Williams since 1971.
2017 Long Course Meters
| Place | Event | Name | Age | Club | LMSC | Time |
|---|---|---|---|---|---|---|
| 5 | X160-199 400 Free | Mark Williams | 39 | NEM | New England | 5:25.84 |