Question about age cutoff for fall tournament season

[gohorns]

What is the age cutoff date for the fall season?  My son turned 9 this past March and is currently playing on a USSSA AA 9-year old team.  In the fall season, can he stay on a 9 year old team or does he have to move to the 10 year old level?
Any feedback would be appreciated.

[baba]

This is a two-part answer, really.

Part 1
The age cutoff is April 30. Whatever age a player is on April 30 determines their baseball age for that season.

Part 2
The season runs from August 1 to July 31, so all players, in fact, entire teams move up in age on August 1.

Part 2 also makes Part 1 confusing because a player might be an actual year older than their baseball age for a couple of months in the season if their birthday falls in the right place.

[AngelsParent]

Your son has to move to 10U.  His age would be considered as of the last day of April 2009.