Hoping to rebound from their tough divisional road loss to the 49ers, the Cardinals played their Week 2 homeopener against their NFC West foe, the Seattle Seahawks.  In the first quarter, the Cards took to the skies first with kicker Neil Rackers getting a 28-yard field goal for the only score of the period.  In the second quarter, Arizona continued to pound away with QB Matt Leinart completing a 30-yard TD pass to TE Leonard Pope, along RB Edgerrin James getting a 17-yard TD run.  The Seahawks would get their only score of the half with QB Matt Hasselbeck completing a 24-yard TD pass to WR Nate Burleson. In the third quarter, the Cardinals' lead was gone with Seattle RB Shaun Alexander getting a 16-yard TD run and kicker Josh Brown getting a 28-yard field goal.  In the fourth quarter, the Cards trailed as Brown got another 28-yard field goal.  Arizona responded with Rackers kicking a 52-yard field goal.  Late in the game, the Cards defense managed to recover a Seahawk fumble.  It would eventually turn into Rackers' 4th career game-winning field goal as made it from 42 yards out as time ran out. Q1 - ARZ - 1:27 - Neil Rackers 28-yard FG (ARZ 3-0) Q2 - ARZ - 14:07 - Leonard Pope 30-yard pass from Matt Leinart (Neil Rackers kick) (ARZ 10-0) Q2 - ARZ - 5:43 - Edgerrin James 17-yard run (Neil Rackers kick) (ARZ 17-0) Q2 - SEA - 1:16 - Nate Burleson 24-yard pass from Matt Hasselbeck (Josh Brown kick) (ARZ 17-7) Q3 - SEA - 8:42 - Shaun Alexander 16-yard run (Josh Brown kick) (ARZ 17-14) Q3 - SEA - 3:34 - Josh Brown 28-yard FG (17-17) Q4 - SEA - 9:52 - Josh Brown 28-yard FG (SEA 20-17) Q4 - ARZ - 4:44 - Neil Rackers 52-yard FG (20-20) Q4 - ARZ - 0:01 - Neil Rackers 42-yard FG (ARZ 23-20)

Based on the above article, answer a question. How many field goals did Rackers kick in the second half?
2