Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Player | Games | Returns | Yards | Long | Yards per return |
| --- | --- | --- | --- | --- | --- |
| Keith Byars | 16.0 | 1.0 | 27.0 | 27.0 | 27.0 |
| Mark Higgs | 15.0 | 16.0 | 293.0 | 30.0 | 18.3 |
| Dave Little | 16.0 | 2.0 | 14.0 | 12.0 | 7.0 |
| Heath Sherman | 15.0 | 13.0 | 222.0 | 45.0 | 17.1 |
| Gizmo Williams | 13.0 | 14.0 | 249.0 | 28.0 | 17.8 |
Question:
Can you tell me the total number of Yards per return that has the Player of gizmo williams, and the Games smaller than 13?
Answer:
0.0