I would say worst player was McManus as he missed 2 field goals and cost us 6 points and most of all hope. Also RT comes to mind as we failed to punch in TD a foot away from goal line running through his side (plus sacks allowed), that's another 7 or better say 6 as McManus would probably miss extra point, and that would be 12 points or total of 22. Even with Siemian pathetic play if others showed up game would still be close or maybe even won. Pick 6 was a terrible play, but I think the worst play was 1st missed field goal, all hope was lost then. As I was pretty much in shock the whole last night, I can't remember did we start any drive past our own 25yds? I had a feeling most of our drives started between 10 and 25 yards. Special teams are not helping us by any means. 
My proposal is move Bolles to RT, call Browns and see if they want to trade Thomas for Marshal, Lynch and some pick, and pray that Simian either bounces or for Kelly to start throwing as soon as possible.