Hoping to rebound from their road loss to the Steelers, the Bengals went home for a Week 13 AFC North rematch with the Baltimore Ravens.  In the first quarter, Cincinnati trailed early as Ravens kicker Matt Stover made a 27-yard field goal.  In the second quarter, Baltimore increased its lead as Stover got a 21-yard field goal, along with QB Joe Flacco completing a 4-yard TD pass to TE Todd Heap.  The Bengals would close out the half as kicker Shayne Graham nailed a 21-yard field goal. In the third quarter, the Ravens pulled away as WR Mark Clayton completed a 32-yard TD pass to WR Derrick Mason and caught a 70-yard TD pass from Flacco.  In the fourth quarter, Baltimore pulled away as safety Jim Leonhard returned an interception 35 yards for a touchdown. With the loss, not only did Cincinnati fall to 1-10-1.  They surpassed their 2007 loss total and were swept by the Ravens for the first time since 2002.
How many more field goals were kicked in the first half than the second?
3