Mid-year report

I applied for the University of Washington. I heard they do not take mid-year reports into consideration. However, I received an email asking for my 1st semester grades, which concerned me, since I struggled with one particular class 1st semester senior year that lowered my GPA. How will this affect my chances of being selected?

Also, is there a particular reason behind them asking for your 1st semester grades?

@sammmy Are you applying as a transfer student for fall 2015?