Assertion: quarterback | /r/HasProperty | done
Facets:
Source sentences:
text: Over the next thirty years the criteria used to crown a passing leader changed several times, but the ranking system made it impossible to determine a quarterback's rank until all the other quarterbacks were done playing that week, or to compare quarterback performances across multiple seasons.
text: Until 1973, the criteria used to determine a passing leader changed several times, but the ranking systems used made it impossible to determine a quarterback's rank until all the other quarterbacks were done playing that week or to compare quarterback performances across multiple seasons.