Reggie Bush used it as a trivia question of sorts Sunday night -- with an answer that he obviously knew. At the time, just as the Detroit Lions' 20-15 loss to Pittsburgh was starting, the Lions had gone 58 games without a 100-yard rusher.

Detroit Lions 58 consecutive games without 100 yard rusher 😳 whoa! I wonder who that last 100 yard rusher was? 😉

— Reggie Bush (@ReggieBush) October 30, 2017

They would finish the night having gone through game No. 59.

Bush knew the answer because he was the team's last 100-yard rusher -- in Week 13 of 2013 against Green Bay. Since that time, the Lions have had eight different lead rushers in a game: Bush, Joique Bell, Ameer Abdullah, Theo Riddick, Matthew Stafford, Dwayne Washington, Zach Zenner and Justin Forsett. None of them topped 100 yards.

Some came closer than others, particularly Bell in the 2013 and 2014 seasons and Abdullah earlier this season. But no Lions player has been able crack triple-digit yards. And what had become something to monitor has turned into a thing emblematic of Detroit's overall run game.

After all, in 44 of the 59 games in the streak, the Lions as a team didn't top 100 yards rushing. The Lions have gone the entire Jim Caldwell era without a 100-yard rusher.

It's the third-longest streak without a 100-yard rusher since the AFL-NFL merger, according to Elias, with only the Cleveland Browns (69 games from 1988 to 1993) and the Cincinnati Bengals (67 games from 1992 to 1997) having longer stretches of not running well.

The Bengals' ineptitude was snapped by Ki-Jana Carter, who ran for 104 yards against Denver in 1997. Coincidentally, the player who broke the Browns' streak was future Lions running back Tommy Vardell, then in his second season in the league, with 104 yards against the Raiders.

If the Lions continue on this streak, they would break the Browns' mark early next season. And Detroit's consistent run-game questions -- there have been slivers of strong running -- have been an issue throughout Caldwell's tenure.

Since Caldwell took over in 2014, the Lions are last in the league in rushing yards per game by almost 4 full yards. Detroit averages 84.4 yards. The next team is the Chargers, at 88.3. The Lions are a little better in yards per rush at No. 31 in the NFL, just ahead of the Chargers (3.62 yards per rush) and 1.05 yards per rush worse than the top team in the league over the span -- Dallas. The Cowboys also have rushed for 55.5 more yards per game than Detroit since 2014.

To be fair, Caldwell has never had a highly ranked run game anywhere he has been a head coach or a coordinator. Even when he talks about running the ball, it sounds like a secondary factor to being able to throw.

"The most important thing, which I've always said, we have to have a respectable running game, make teams honor it," Caldwell said. "And then secondly, like I've mentioned so many times before, I'm more interested in winning, more so than anything else. And how we go about it, it could vary."

Detroit has had more runs than passes in one game this season -- a road win over the Giants. In another road win over Minnesota, Detroit had equal pass attempts and rushes. It's likely not a coincidence that in both those games, Abdullah came within 15 yards of hitting 100. Had he not hurt his foot briefly against Minnesota, he might have picked up one or two more runs to increase from 94 yards to over 100.

But it didn't happen, so the streak remains.

Caldwell admitted the Lions haven't been "as effective as consistently as we'd like to be" running the ball -- obvious considering that as a team Detroit has only gone over 100 yards rushing in one game. And the Lions, once again, are headed toward the bottom of the league in rushing at No. 28 in yards per game (82.1) and yards per attempt (3.48).

But does Caldwell think opponents respect -- that’s the word he has used often to describe what he'd like from his rushing attack -- Detroit's run game?

"That's a question for you to ask our opponents," Caldwell said.

One way to help do that? Have a runner finally break the streak. Until that happens, Detroit might be answering that same question over and over again.