The Raiders' fifteenth game was an AFC duel with the Colts at home. The Raiders struck immediately after a 99-yard kickoff return was made by Jacoby Ford. They soon trailed with RB Joseph Addai getting a 6-yard TD run, followed by kicker Adam Vinatieri getting a 30-yard field goal. They took the lead again after kicker Sebastian Janikowski hit a 59 and a 38-yard field goal, but trailed for the second time with QB Peyton Manning completing an 18-yard TD pass to TE Jacob Tamme. The Raiders tried to cut the lead with Janikowski nailing a 51-yard field goal, but fell further behind with Manning getting a 4-yard TD pass to WR Blair White. The Raiders tried to keep up with Janikowski making a 45-yard field goal, but the Colts kept going with Manning completing a 7-yard TD pass to WR Pierre Gar&#231;on. The Raiders tried to come back after QB Jason Campbell threw a 6-yard TD pass to TE Zach Miller, but the Colts defense prevented any more chances, giving them the loss. With the loss, the Raiders fell to 7-8, and were officially eliminated from postseason contention for the eighth straight year.
Question: How many yards shorter was Sebastian Janikowski's second field goal compared to his first?
Answer: 21