This is modified so that there are no violation of copyrights.
Sports fans predict that the abuse of players among coaches ( will subside if the testing of random animals is) ......
Why is would not correct here?
This is a real condition; thus, WILL is appropriate.
REAL - means it is possible
UNREAL - of course that smth is in the past and thus impossible or smth is just impossible.
From the subjunctive comes expression "If I WERE YOU..." which is an unreal condition.