Hoping to rebound from their loss to the Steelers, the Titans flew to New Meadowlands Stadium for an interconference duel with the New York Giants. In the first quarter, Tennessee took the early lead when kicker Rob Bironas nailed a 48-yard field goal, followed in the second quarter by running back Chris Johnson getting a 1-yard touchdown run. The Giants replied with kicker Lawrence Tynes nailing a 50-yard field goal, followed by running back Ahmad Bradshaw getting a 10-yard touchdown run to tie the game. In the third quarter, near the Giants endzone, a Chop Block penalty was enforced on Bradshaw into the endzone for a safety. The Titans started to pull away with quarterback Vince Young completed a 13-yard touchdown pass to wide receiver Kenny Britt, followed in the fourth quarter by Bironas getting a 22-yard field goal. Finally, Johnson closed out the game with an 8-yard touchdown run.

Based on the above article, answer a question. How many yards was Rob Bironas's shortest field goal?
22