The Chicago White Sox show signs of being the team that will give the Detroit Tigers the fiercest competition in the race for the American League Central Division championship.
Buoyed by Philip Humber's perfect game against Seattle on April 21 (picture above), the White Sox are 9-6, one-half game behind the Tigers, with a staff earned run average of 3.16, the third-lowest ERA in the AL.
Detroit's team ERA of 3.51 is fourth-best in the league.
Minnesota, Kansas City and Cleveland, who make up the rest of the AL Central, are in the bottom five for team ERA in the AL.
Another encouraging sign for Chicago: Adam Dunn. The designated hitter who slumped in 2011 has 13 runs batted in. Dunn had 42 RBI last season.