Three things that could go right or wrong for Ravens vs. Texans

THREE THINGS THAT NEED TO GO RIGHT …

1. RAVENS FOLLOW LEAD OF LEACH

. Ravens fullback Vonta Leach is licking his chops to bang heads with his former teammates and open up holes for Ray Rice.

2. LINE TAKES HEAT OFF FLACCO.

Even without Mario Williams, the Texans front seven is formidable, as Wade Phillips’ unit is tied for fourth in the NFL in sacks.

3. SCHAUB IS SILENCED.

When he last faced the Ravens, Texans quarter Matt Schaub threw for 393 yards and directed five straight scoring drives. This, of course, is a different Ravens defense.

THREE THINGS THAT COULD GO WRONG …

1. FOSTER HITS CENTURY MARK

. Arian Foster is the last running back to gain 100 yards against the Ravens, and containing him will go long way toward putting away the Texans.

2. DEFENSE CAN'T GET OFF THE FIELD.

When the two teams met last December, the Texans went 11-for-22 on third and fourth-down conversions and had two 90-plus yard scoring drives.

3. RAVENS TURN ONE-DIMENSIONAL.

The Ravens have run the ball well at times and thrown the ball well at times. They’re still searching for that elusive balance.