The first World Baseball Classic was supposed to be the last act of Roger Clemens' career.
Clemens said he would retire after leading the Astros to the 2005 World Series, but he wanted to represent the United States in the inaugural WBC. And he did, only to lose an elimination game to Mexico, reverse his decision and play parts of two more seasons in the Major Leagues.
Which brings us to David Ortiz.
Big Papi captured the attention of Red Sox Nation with cryptic Twitter activity this week. Representatives of Ortiz and Boston haven't said publicly that a comeback is possible.