What does "all things baseball" mean in the following newspaper quote? How does the noun "baseball" function? My guess is that "baseball" is used as a pseudo-adjective to modify "all things" from behind and that "all things baseball" means "all things about baseball. Am I all wrong?
“This guy [Shohei Otani] consumes all things baseball,” Eppler [Angels' GM] said. “There is not a lot else going on in his world but baseball and training. He does like to read a lot.”