Are there any catchers to the right of the batter?
No, the catcher is to the left of the batter.
    src        edge_attr  dst
0     0   to the left of    6
1     1               of    6
2     1   to the left of    3
3     3  to the right of    1
4     3  to the right of    5
5     3             with    5
6     5   to the left of    3
7     6  to the right of    8
8     6  to the right of    0
9     6          holding    5
10    8   to the left of    6