Sorensen was promoted from the Chargers' practice squad Saturday, Michael Gehlken of the San Diego Union-Tribune reports.
Kevin Acee of the San Diego Union-Tribune reported that Philip Rivers is dealing with flu-like symptoms, but he's still expected to make his 157 straight start Sunday meaning the Sorensen promotion was likely for precautionary reasons only. The 27-year-old is expected to be the third-string quarterback against the Chiefs.