Coach Jason Garrett isn’t going to treat the Dallas Cowboys’ meaningless season finale as, well, a meaningless game. Garrett said any player who is healthy is going to play. “Be our best regardless of what circumstances are,” Garrett said. “Anybody who is healthy and ready to go – they are going to play three hours on Sunday.” But, as Garrett said, the Cowboys won’t use players who are dealing with injuries, notably left tackle Tyron Smith and defensive tackle David Irving. Smith is battling a right knee injury and lasted only three plays against the Seattle Seahawks last Sunday. He didn’t practice Wednesday and is expected to be shutdown for the season. Smith missed two games earlier this season with a groin injury. Garrett said swing tackle Byron Bell would remain as Smith’s primary backup. Neither did Irving, who has missed the past three weeks with lingering issues from a concussion he sustained in the Nov. 30 game against the Washington Redskins.