Football: Keenan Allen red-flagged for drug test at combine, according to ESPN report

Former Cal star Keenan Allen was red-flagged for a drug test at the NFL combine in Indianapolis and ordered to undergo another test, according to a report by ESPN.com’s Adam Schefter.

Allen’s agent, J.T. Johnson, denied the wide receiver failed a drug test.

Results of Allen’s subsequent test are unknown.

Once rated the top wide receiver in this draft class, Allen’s stock has slipped some as he has rehabbed a knee injury he sustained late last season. He was clocked at 4.71 and 4.75 seconds for the 40-yard dash at a private workout he held for scouts last week in North Carolina.

He still is projected as a late first-round or early second-round pick on most NFL mock drafts.

Jeff Faraudo