John Cena Undergoing An MRI On His Left Knee Tomorrow

After his injury on this week's WWE Raw, John Cena announced on Twitter that he will undergo an MRI on his left knee tomorrow:

" data-datetime="2012-11-20T04:40:08+00:00">November 20, 2012

Cena is still advertised to appear at tomorrow's Smackdown tapings, for which we will have full coverage.