http://www.chron.com/disp/story.mpl/sports/fb/texans/grades/4360967.html Quarterback After the Texans trailed 26-3, David Carr was 17-of-24 for 162 yards and a touchdown against a defense that ranked 29th. Grade: F Running backs Against a run defense that ranked 29th, the Texans rushed for 25 yards, 11 by Wali Lundy and 4 by Samkon Gado. They also dropped passes. Grade: F Receivers Andre Johnson and Eric Moulds combined for 20 catches and 177 yards. Tight end Owen Daniels had five catches. Grade: F Offensive line The running game averaged 1.8 yards a carry. David Carr was sacked four times, although the line is supposed to have help on pass protection. Grade: F Defensive line Thomas Johnson became the fourth linemen to be on the sideline, but they still did an outstanding job against the run. Grade: C Linebackers DeMeco Ryans was all over the field with 14 tackles. Morlon Greenwood had nine. Grade: B Secondary The defensive backs allowed two 100-yard receivers. Demarcus Faggins was beaten on a touchdown pass. Grade: D Special teams Kris Brown kicked a 47-yard field goal. Chad Stanley had a 41.8-yard net but fumbled to set up a field goal. Coverage was terrific. Grade: B Coaching The coaches have to accept as much blame as the players for the Texans' latest debacle. Grade: F Can a QB change fix all of this?