Votto has come back from his knee surgery and performed very well; however, his power numbers are noticeably down from his career average. His iso currently sits at .186, .45 points lower than his career average of .230. It's worth considering the possibility that pitchers are more weary of Votto's talent and he gets fewer pitches to drive, but I think pitchers have known about Votto for awhile now, so I'm not buying that excuse. Is it a change in approach? Is the knee still recovering? Random variation?
It's worth noting his LD% is around his career average, but he appears to be hitting more ground balls (45% in 2013 vs 41% career) and fewer fly balls (27.5 for 2013 and 33.5 career).
What do you think is going on?