President Obama learned en route to Air Force One today that Mark Buerhle of his beloved Chicago White Sox pitched a perfect game today. Here's Robert Gibbs during a gaggle on Air Force One today:

The President called Buehrle. They pulled the pitcher out of the media room and into Jerry Reinsdorf's -- into his office. The President congratulated him, said it was an unbelievable achievement, something that everyone will always remember. The President told him, maybe it was because he wore the White Sox jacket at the All-Star Game. (Laughter.)