2013.
That’s the last time the Detroit Lions defeated the Dallas Cowboys. That game was an instant classic and one that Lions fans will never forget. The Matthew Stafford fake spike game that included a 329-yard performance from Calvin Johnson, combined with another 92 rushing yards via Reggie Bush. A 24-point fourth quarter helped the Lions overcome 27-17 deficit with under seven minutes remaining.
Since then, it’s been rough sledding for the Lions. The very next matchup was the infamous Wild Card matchup that ended in pass interference controversy. And in the following five regular season matchups, it’s been all Cowboys.