Does the player serve the ball?
Yes, the player serves the ball.
    src        edge_attr  dst
0     1  to the right of   13
1     1   to the left of   16
2     2   to the left of   12
3     4  to the right of    7
4     4  to the right of    5
5     5  to the right of    7
6     5   to the left of    4
7     6  to the right of   19
8     7   to the left of    4
9     7   to the left of    5
10   11   to the left of   19
11   11  to the right of   15
12   12  to the right of    2
13   13   to the left of    1
14   15   to the left of   11
15   16  to the right of    1
16   18          serving   13
17   19  to the right of   11
18   19   to the left of    6