Surprising no one The Chargers had one of the worst Olines in the league. Tua or Brady would get murdered on the Chargers and play like shit just like Rivers.
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Chargers ranked #29

Ranking all 32 NFL offensive lines following the 2019 regular season
PFF's Ben Linsey provides the offensive line rankings following the 2019 NFL regular season.

Chargers ranked #29
The Chargers’ offensive line has been their roster's biggest weakness for several seasons now. To put it in perspective, the last time they had a team pass-blocking grade ranked above 26th was 2014. With Russell Okung out for much of the season, the tackle position manned by Trent Scott and Sam Tevi was an issue, consistently putting Philip Rivers under pressure. Tevi and Scott combined to allow 88 pressures this season. That was the second most of any tackle duo in the NFL, behind Nate Solder and Mike Remmers in New York.