While approximately seven teams per offseason make a change at quarterback and there were six teams this past offseason, there could be as many as 11 teams making a change with either their current or long-term QB1 in 2018.
That assumption even excludes a surprise move such as when the Chiefs traded up to draft Patrick Mahomes at last year's draft.
There are six teams that are virtually guaranteed to have a new quarterback next year.
The 2018 draft class could have as many as five quarterbacks selected in the first round.
Kirk Cousins headlines the list of free agent quarterbacks.