I have that same TV the Sony KDF-42WE655 and it does have an integrated HD tuner. That 10.1 channel is a Hi def channel. So the football game would have been in Hi def. You are able to pick up some local HD channels off your antenna. I get my hi def channels from Time Warner I have one of their HDTV DVR's and the picture quality on the HD channels is amazing. Also the reason some pictures may appear strechted out is the settings you have set on your TV. I am not at home now so I can't tell you all the settings. I have mine set to normal where HD signals show in full widescreen and non HD signals have bars on the sides. That way all programs appear normal. If you have it set to zoom or wide zoom or another one I don't remember now the TV will take a non HD program and stretch it to fill the whole screen which I think looks horrible. So even on 10.1 not all programs are in HD and on a non HD program may be streching because of the settings on the TV. If you have any questions about settings on that TV let me know I can look up some information since I have the same TV.