From Michael Schmidt (NY Times):
The commissioner’s office has decided not to discipline Alex Rodriguez in light of its investigation into whether he lied about his use of performance-enhancing drugs in a meeting with baseball officials in March, according to people in baseball with knowledge of the matter.
From a practical standpoint, punishing Alex Rodriguez would have made little to no sense since he was outed and had to defend himself. Telling the truth was the best way in which to do that. Also, from a moral standpoint, it would have looked bad if the MLB decided to sanction or suspend one of the few players who actually did speak out on their use of performance enhancing drugs. In the end, they score some public relations points by holding an investigation to make it seem as though they care—that’s enough.
(props to RAB)