I don't mean this as a slight to J-Rob, but if I didn't know what J-Rob looked like, and you put him next to DeAndre Ayton, I probably would have guessed Ayton was David Robinson's kid. He looks almost like a carbon copy of the Admiral from his Navy days. Even some facial similarities. I'm guessing J-Rob looks like his mom.
For the season, Justin has the highest blocks per 40 minutes on the team (6.3). Next best are Marques (3.1) and Wendell (3.0). Justin's block percentage (15.6%) also far outstrips Marques (7.6%) and Wendell (7.4%). For comparison, Shelden Williams's senior year block percentage was 7.5% (his blocks per 40 was 4.6). His best block percentage of 8.0% (bp40 also 4.6) came in his sophomore year.
Alas that Justin has only put up such numbers in 51, mostly garbage-time minutes.
However, whoever's been saying that Wendell and Marques aren't "rim protectors" might want to look at their percentages in comparison to the Landlord. Though granted, there's more to rim protection than blocked shots.