By Richard Johnson Six undefeated teams were taken down Saturday, leaving only nine at the FBS level. How do they stack up? FT WORTH, Texas — You could say that Kate Dykes is a little superstitious. This is the second week in a row the wife of head coach Sonny Dykes has watched her husband’s team play in a nail biter. Last week in Lawrence, Kansas, she went to the bathroom in the third quarter and heard the Frogs scored on the radio broadcast, so she stayed in there for the rest of the third stanza, even texting a high-profile TCU booster a picture of her new seat. This week, she was in the st…