In fairness to John Fox, it’s rare for teams to keep their offense on the field in the situation the Bears found themselves in during the second quarter of Saturday’s 20-10 loss to the Detroit Lions at Ford Field. With the ball on their on 45-yard line and facing a fourth-and-one, Fox elected to punt — a decision that backfired when the Lions drove 97 yards for their first touchdown of the game. Here’s why Fox, most likely, decided to punt: It’s what almost every other coach would do in the same situation. There have been 75 instances this year of a team facing a fourth-and-one in its own territory in the first half. Sixty-eight of those fourth-down plays were punts; only seven were conversion attempts (9 percent), according to Pro Football Reference’s Play Index. Going for it is a little more prevalent when you look at first half fourth-and-ones between a team’s 40 and 49-yard lines, with conversion attempts on six of 22 plays (27 percent). All six teams that went for it in a similar situation to the Bears converted the first down. There’s not a correlation to winning from that, though: Those teams went 3-3 in those games). But still, when Fox said he didn’t consider going for it on fourth down, he was following the conventional wisdom of most coaches around the NFL. “You do got something to lose, that’s called field position,” Fox said. “We failed to have that much of the day, largely to some of our inability to move the ball, in particularly the first half. I think, sure, you can go for that, but it can bite you too.”