Nick Castellanos led off the ninth with a sinking liner to right off Zach Duke (1-1) that Melky Cabrera couldn't grab cleanly. Castellanos stretched the hit into a double, narrowly avoiding the tag from shortstop Alexei Ramirez's tag.
After a delay while White Sox manager Robin Ventura discussed the call with the umpires, Alex Avila sacrificed and Iglesias singled to shallow right-center.
Detroit is off to its best start since 1984, according to STATS. The Tigers went 104-58 that year and won their last World Series title.
