Well, the ball was covered about 60% by human body parts. Of that coverage, about 75% was from Jennings's body, and about 25% from Tate's. Ergo, Jennings caught the ball in my opinion, not Tate.
I just learned that if the Pirates don't win 6 of their final 9 games, they will be the first team in history to be 16 games over .500 after 108 games and still finish with a losing record.