This gives me the following tables that seemed appropriate.
I was able to track down the specific testsuite, testcase, and testpoint I was interested in (e.g. TestPointId = 83). However, I am not able to track the results for this TestPoint. TestRun table seems to have test runs by title but the title is for TestSuite and does not have any test case within the title.
There is no reference to TestPointID in any of the tables. This relationship seems to show up on the web portal correctly. I can go to a specific test case within a test suite and look at the execution history in detail.