Jaguars sign three undrafted rookies

On their final day of their mandatory minicamp, the Jaguars added three undrafted rookies to their roster. The club said Thursday it had signed wide receiver Nathan Slaughter, punter/kicker Kasey Redfern and long-snapper Charley Hughlett. All three tried for the Jaguars this week. The 5-foot-9, 184-pound Slaughter played collegiately at West Texas A&M, catching 174 passes…