There is a plan to change the way the tennis courts in the upper park are managed. A description of the proposals can be found here.
And here is a link to a collection of Telegraph Hill Facebook page comments on the issue. Beware - it's 52 pages long! Clearly, people are very interested...
... and finally, documents outlining the process of consultation and the results:
Summary of the steps taken to consult in Telegraph Hill regarding LTA proposals
Friends of Telegraph Hill Park response to LBL on Tennis Proposals
Summary of a public meeting dedicated to the tennis courts proposal, from 16/11/21