The big final rule for the comma is one that you won't find in any books by grammarians. It is quite easy to remember, however. The rule is: don't use commas like a stupid person. I mean it. More than any other mark, the comma requires the writer to use intelligent discretion and to be simply alert to potential ambiguity.
| Game | Time | WPM | Accuracy |
|---|---|---|---|
| 442 | 2019-08-01 13:10:42 | 38.88 | 92% |
| 236 | 2019-07-04 13:30:08 | 42.35 | 96% |