JACKSONVILLE, Fla. - The Jacksonville Jaguars have released wide receiver Ace Sanders, a fourth-round draft pick in 2013.

Sanders caught 51 passes as a rookie, but was less of a factor last season with only six catches. He also was suspended the first four games of 2014 for violating the league's substance-abuse policy.

He was a question mark this season to make the roster, which has been upgraded. The Jaguars consider Allen Robinson, Marqise Lee, Allen Hurns and rookie Rashad Greene locks for the 53-man roster. Sanders likely needed to make it as a punt returner, but the Jaguars seem content to go with Tandon Doss and undrafted rookie Corey Grant.