Pertaining to what's quoted above, the good news is that teams can apparently help their QBs and pass offenses function significantly better with help at receiver. Obviously that's intuitive as well, but the degree to which it's true may be surprising. For the 2017 and 2018 seasons the standardized regression coefficients in predicting EPA per pass dropback team-by-team are as follows. 84% of the variance in EPA per pass dropback explained, with all independent variables statistically significant. PFF QB grade: 0.425 PFF OL pass blocking grade: 0.198 PFF team receiving grade: 0.560 So the league as a whole is more dependent on receiver play than it is on QB or OL play, in terms of pass efficiency. When you confine the analysis to Tom Brady's career year-by-year exclusively (NE and TB), you get a roughly analogous finding. 69% of the variance in EPA per pass dropback explained, with all independent variables statistically significant. PFF QB grade: 0.300 PFF OL pass blocking grade: 0.316 PFF team receiving grade: 0.630 So while Brady has been somewhat more dependent than the league at large on his offensive line play for his teams' pass efficiency, he's been hugely dependent on his receiver play. So when you consider that the 2021 Dolphins' pass offense was envisioned to function with a premier downfield threat in Will Fuller, capable receivers in Devante Parker and Mike Gesicki, and a highly-touted newcomer in Jaylen Waddle -- and instead functioned with a crippled version of that -- help for Tua and the pass offense could indeed be on the way in the form of personnel changes at receiver. A qualification here is that while the correlations between QB and OL grades, and the correlation between OL and receiver grades are non-statistically significant, the correlation between QB and receiver grades is 0.52 and statistically significant. I'd like @cbrad to weigh in on that (and anything else here) if he would.