From the Chronic...

The Texans have traded defensive tackle Travis Johnson to the San Diego Chargers. The Texans dealt Johnson for a conditional draft choice that could be a fifth- or sixth-round pick, depending on his performance. 

Johnson, the first-round pick in 2005, had been out while recovering from surgery for a sports hernia. He was supposed to play for the first time in the last regular-season game against Tampa Bay and be ready for the regular-season opener against the New York Jets.

Link to Chronicle article here.

Thanks, shgall!  - bfd