UW is currently #2 in SRS and will end the season #3 at worst. It will stay #2 if Alabama beats Clemson by +10.
With a win Alabama would surpass UW 1991 & Nebraska 1995 as the best SRS team of the past 35-40 years.
Here are the current SRS ratings.
Since 1975, UW has finished in the top 3 (of SRS) five times. That currently is in a 3-way tie for 9th overall. Note that since 1975 only 28 schools have had a top 3 SRS finish.