When Tony Romo went down during the preseason with a back injury, the Cowboys looked like they were in trouble again. Their 2015 season cratered because they didn't have a backup plan at quarterback, and it didn't look like they had a plan this season either.

Turns out, they were planning all along and had Dak Prescott in the bank. Either that or the Jones family is full of accidental geniuses.

Many people assumed they might sign a veteran or make a trade, and many Cowboys fans wanted Dallas to deal backup guard Ron Leary for someone. After all, who needs backup linemen? Turns out the Cowboys do, and it turns out they passed on a trade to land a backup veteran in the form of Josh McCown.

Ian Rapoport of NFL Network reports Dallas turned down an opportunity to land McCown in exchange for Leary.

The #Cowboys declined an offer to trade for OL Ronald Leary, declined to trade for #Browns QB Josh McCown to play Dak Prescott. Smart calls. — Ian Rapoport (@RapSheet) September 27, 2016

This looks particularly smart right now, because starting guard La'el Collins is reportedly set to miss the next 6-to-10 weeks with a foot injury. Tyron Smith has a bad back. It's only Week 3.

Having depth on the offensive line is a smart move, and the Cowboys are sitting on it now.

They also are fortunate because it appears they're holding the future at quarterback in the form of Prescott. Sometimes people are good and sometimes people are lucky. Sometimes people are both and the results typically end up working out quite well.