I would have thought that if Tiv's average of hitting a target is approx 75% then correct me if i am wrong, but i that would in turn tell me that approx 75% of his inside 50's would have hit targets also.
Tiv is 50-50 for mine, he season declined towards the end (over the second half, compared to his first half) so i doubt there will be much interest. To trade him, it would have to be a win for us (something decent) otherwise sign him up on a performance based contract.
Still can be of some value, especially as the team improves so will Tiv.