But you can buy them in a special presale that begins at noon on Wednesday and ends at 8 a.m. Thursday. The code is c2STRONG.

Tickets start at $20.

The April 22nd game is a tune-up for the regional Olympic qualifiers, set for Oct. 1-13.

Southern Californians who could play in the game include Galaxy defender Oscar Sorto and North Hollywood’s Mario Rodriguez, a striker who plays for Germany’s Borussia Mönchengladbach.

The U-23 team’s first training camp of the year is underway with former Galaxy midfielder Andy Herzog in charge of the team.