Kraig was washed when he got to KC. He was 34 when he got there in '92 and while KC had a good year and went 10-6 Kraig had like a 50-something% completion rate and throw about as many ints as tds.
He was one of the outmatched in the playoff game QBs. They got shut out by the Stan Humphries Chargers, Kraig had a sub 50% completion rate, got sacked 7 times and threw 0 TDs and 2 Ints.
His poor play is why they went and got Joe Montana. In 93 Montana was the starter, and Kraig got to play a handful of games while Montana was injured.