Coming off their divisional road win over the Texans, the Titans returned home for a Week 8 intraconference duel with the Oakland Raiders. In the first quarter, Tennessee trailed early as Raiders kicker Sebastian Janikowski got a 50-yard field goal. The Titans would tie the game with kicker Rob Bironas getting a 35-yard field goal. In the second quarter, Oakland retook the lead with Janikowski getting a 43-yard and a 54-yard field goal. In the third quarter, Tennessee drew close with rookie RB Chris Henry getting a 24-yard TD run for the only score of the period. In the fourth quarter, the Titans took the lead for good as Bironas nailed a 23-yard field goal. Afterwards, Tennessee's defense held off the Raiders long enough for a touchdown.

Answer this question based on the article: How many more field goals did Sebastian Janikowski make over Rob Bironas?
2