The Texans signed running back Evan Hull after a successful minicamp workout and released tight end Luke Lachey, a seventh-round draft pick last year from Iowa.Hull is a former Indianapolis Colts fifth-round draft pick from Northwestern. He has also played for the Pittsburgh Steelers and New Orleans Saints, rushing for 49 career yards and catching two passes for 12 yards.Lachey was signed last year to a four-year, $3.46 million deal that included a $101,672 signing bonus. He spent last season on the practice squad.Lachey is the son of retired NFL offensive tackle Jim Lachey.Lachey caught 28 passes for 231 yards in his final season for the Hawkeyes He caught 10 passes for 131 yards two seasons ago. As a sophomore, he caught 28 passes for 398 yards and four touchdowns.Aaron Wilson is a Texans and NFL reporter for KPRC 2 and click2houston.com .