Situational QB rating

[BaybeeJay]

There was a debate earlier on the board regarding situational stats. How would I find Alex Smith's QB rating for the first half and the second half of last game?

 

[tupperware]

Not sure how to filter the situational stats for only the Cowboys game but you can find his situational stats here: http://www.nfl.com/player/alexsmith/2506340/situationalstats