To find the percentage of players asked back for a second evaluation, we can use the formula:
percent = (part / whole) x 100
In this case, the part is the number of players asked back (9) and the whole is the total number of players at the tryout (60).
So,
percent = (9 / 60) x 100 = 15%
15% of the players at the tryout were asked back for a second evaluation.