ARLINGTON — The Cowboys finished winless in the preseason for the first time since 2000 and for only the fifth time overall. In the previous four winless exhibition seasons, the Cowboys finished above .500 only one.They made the playoffs in 1998 with a 10-6 record despite going 0-5 that preseason.“Well, it has always concerned me. It would concern me,” Cowboys owner Jerry Jones said. “On the other hand, the first year I came in the NFL, we were undefeated going into the Denver game. Dan Reeves was their coach. He was a disciple of Tom Landry. He was hot over the fact that Coach Landry and those things had been done here with the Cowboys. He left [quarterback John] Elway in all the way through the game, and we played into overtime to beat the Cowboys, so we didn’t go undefeated. We went 4-1. Thought this is going to work. We won one football game that year. So much for preseason.”The Cowboys scored only 60 points in four preseason games. They allowed 116.