Basically, if you don't know the reference you've never seen the terrific 90s film The Sandlot.
And, if that's the case, go, right now, and get a copy of it and peruse. After all, it's summertime, the perfect time for a baseball movie.
.......... Ruprecht ( STOP )
P.S. Porter looks a bit frantic and bug-eyed in the image. Chalk that up to my fuzzy self-portrait cell phone camera photographic skills. You're welcome.