Drew Pearson is concerned for Dak Prescott and the Dallas Cowboys ... saying he believes the quarterback not playing in the preseason this year could cost the team BIGTIME.
The Hall of Fame wideout explained his stance to TMZ Sports ... saying he thinks Dak NEEDS preseason games after sitting out most of last season with an ankle injury.
"I think you need to at least go out there and start a series and get the feel of that, have that confidence that you’re ok," Drew says.