The Cowboys were busy during the last round of the NFL draft Saturday with five selections. But their work didn’t end with their final pick.

After the draft, the Cowboys worked the phones in pursuit of the top players who weren’t selected.

They agreed to terms with 23 undrafted rookie free agents. They’ll join the Cowboys’ nine draft picks Friday and Saturday for a rookie mini-camp at Valley Ranch.

Among the Cowboys’ 23 undrafted free agent additions, five are offensive linemen and three are defensive linemen. Last year, the Cowboys didn’t sign any linemen among their 15 undrafted free agents.

After not drafting a quarterback again, the Cowboys signed one who went undrafted: West Texas A&M’s Dustin Vaughan (6-41/2, 235) from Corpus Christi.

Vaughan earned an NFL combine invitation in February after leading the nation last season with 5,401 passing yards and 53 touchdown passes. Over the last two seasons, Vaughan threw for more than 10,100 yards and 98 touchdowns.

The Cowboys also added two undrafted free agent defensive linemen who were among the 26 players they brought in for pre-draft visits: Texas’ Chris Whaley and Arizona State’s Davon Coleman. Whaley, however, won’t participate in the rookie mini-camp because he’s still recovering from November knee surgery.

The Cowboys also signed two undrafted Baylor players in tight end Jordan Najvar and running back Glasco Martin and added Texas A&M running back Ben Malena, the former Cedar Hill standout who took part in the club’s Dallas Day workout for local products.