Bloomberg Sports thinks Alex is unlucky:
In terms of batted-ball data (line drives, groundballs, flyballs) Rios is largely the same hitter he has always been. Looking at line drives – the type of balls that fall most for hits – he is actually hitting more liners this year than he did in 2010. This could be some classification bias as liners are sometime misclassified as flyballs and vice versa; however, all of his rates are within career norms.
In addition to the batted-ball information, Rios is showing similar plate discipline. His walk rate is in line with his career number and he has actually cut down his strikeout rate quite a bit. He is also making more contact and whiffing on fewer pitches.
According to the pitch values listed on Fangraphs.com, Rios has struggled with fastballs this year. As a player hits the other side of 30, this could be a concern. Meanwhile, Rios continues to make contact with heaters so it doesn’t appear as if his bat has slowed up enough to be a legit concern right now.