Astros should be all in on Tanaka

If Masahiro Tanaka signs with the Astros, he could lead one of baseball's top young rotations. AFP/Getty Images

We knew that CC Sabathia's preference, when he became a free agent in the fall of 2008, was to return to his home state of California, if all things were equal. He might have loved to sign with the Dodgers, if all things were equal. But that was before the Yankees, well aware of Sabathia’s interest in playing in the Golden State, made the bidding unequal, with their offer of $161 million.

When Robinson Cano became a free agent two months ago, we knew the gap between what his side asked for and what the Yankees offered was enormous, and we knew that the tension between the two sides was building -- a clue that Cano was ready to leave for the right offer.

When Albert Pujols filed for free agency, there was clearly a breach developing between him and the Cardinals, and a year later the same was true in the talks between Josh Hamilton and the Rangers. The player’s perception of his own value was far different, in those cases, than the team he was leaving, and this is how Pujols wound up completing his deal in about 48 hours, and how Hamilton left the Rangers for a division rival.

But in the case of Masahiro Tanaka, we really don’t have clues about what he wants from his free agency.