Tigers pitcher Justin Verlander found a flaw while watching tape, and is working to correct it, according to the Detroit Free Press.
Verlander and pitching coach Jeff Jones found the issue, but would not divulge what Verlander would attempt to fix. They said they compared video of Verlander this season with starts from last year. Verlander will show whether he's figured things out during his start against the White Sox Thursday.
Verlander has a 3.69 ERA in 131 2/3 innings.