With Matt Schaub out of commission for at least the next four weeks the Texans needed someone to back up new starting QB Sage Rosenfels.  They decided to sign 29-year old Craig Nall to serve in that role.  Nall has played in 7 games (0 starts) in his NFL career and he has completed 30 of 48 passes (62.5%) for 402 yards with 5 TD passes and 0 interceptions (123.8 QB Rating).  He has also carried the ball 10 times for 11 yards (1.1 ypc).  This was a solid move for the Texans as Nall has played well in limited action in his NFL career.