Are there animals on the field?
No, there is a catcher on the field.
    src        edge_attr  dst
0     0         throwing   16
1     0   to the left of   11
2     0               on    4
3     1   to the left of   11
4     2               on    4
..  ...              ...  ...
64   22   to the left of   18
65   23  to the right of   22
66   23   to the left of   14
67   23   to the left of   20
68   23  to the right of   18

[69 rows x 3 columns]