Brown was released last week by the Texans after appearing in three games for Houston this season. The move back to San Diego marks the first time the 32-year-old has been with the team since 2013. He appeared in 30 games with one start during his stint with the Chargers from 2012-13. In his 10 seasons in the NFL, he's rushed for 5,332 yards on 1,267 carries, an average of 4.2 yards per carry to go along with 38 touchdowns and 242 receptions for 1,927 yards.
The Chargers also signed center Trevor Robinson, who had been with Cincinnati's practice squad and appeared in 19 games for the Bengals over the past two seasons.
- Marc Weinreich