Opportunity-adjusted fantasy points (OFP) strip away player talent and efficiency and focus solely on opportunity.
FORP -- fantasy points over replacement player -- is the difference between a player's actual fantasy point total (FF Pts) and his OFP (expected total).
Quarterback adjustments are made as follows:
Pass attempts: No change
Pass completions: Pass attempts multiplied by a passer's expected completion percentage based on depth of throw and location
Passing yardage: Pass attempts multiplied by a passer's expected yardage based on depth of throw and location
Passing touchdowns: Passing OTD
Interceptions: Pass attempts multiplied by a passer's expected interceptions based on depth of throw and location
Rushing attempts: No change
Rushing yardage: Rush attempts multiplied by a rusher's expected yardage based on in-box defenders
Rushing touchdowns: Rushing OTD
Two-point conversions: OTD multiplied by the league average two-point rate
Fumbles lost: Touches multiplied by the league average rate
For the complete explanation of OFP and how you can use it to make better fantasy decisions, check out this introduction article.
Below is the 2018 OFP scoreboard for quarterbacks: