Week 5, like every N.F.L. week, had its share of fourth-down decisions that hurt teams’ chances of winning a close game. The Colts punted on a fourth-and-1 on their 40. The Texans passed up a good risk late in the game on fourth-and-4 at the Cowboys’ 11. The Jaguars punted on fourth-and-1 near midfield late in the game. (The worst!)

But no one could match the puzzling decisions of the Kansas City Chiefs, who lost Sunday at the San Francisco 49ers, 22-17. From the perspective of the NYT 4th Down Bot, our news application and C-list Twitter celebrity — which monitors every fourth down in real time and tweets whenever it sees an irrational decision — it featured some of the worst fourth-down strategy of any game this year.

Three calls in particular stood out, beginning with the worst:

A. Up by 1 in the third quarter, the Chiefs punted on fourth-and-4 at the 49ers' 36 — inside field-goal range. N.F.L. coaches do this more than half the time, but from the Bot’s perspective, it’s worse than both trying a field goal and going for it. There’s little field position to be gained by punting — the punt ended in a touchback — and a field goal is about a 50-50 shot for an average kicker (and probably even higher in this case, given the relatively warm weather and favorable conditions). Punting represented the worst of the three options.