The Texans worked out three defensive backs, auditioning Rodney Randle, D.J. White and Jeremy Clark.
None were immediately signed to a contract.
Randle played collegiately at Lamar and was previously with the Los Angeles Chargers. He had a 41-inch vertical leap and 4.28 speed in the 40-yard dash.
Clark attended Michigan and was previously with the New York Jets who selected him in the sixth round. Clark is 6-4, 210 pounds.
White played at Georgia Tech and is a former Kansas City Chiefs sixth-round draft pick.