Which episode of Smallville is Tom Welling not in?!

Which episode of Smallville is Tom Welling not in?

Tom welling is only in 133 out of 134 while Allison Mack is in all 134. Just thought that was odd.

2 weeks ago
I found the answer.... On season 7, the first episode doesn't have Tom listed as part of the cast for that show according to IMDB. Thanks anyways guys!

I don't remember him being in the sixth season at all. I thought it was all Lana, all the time. </sarcasm>