The second round of the California Interscholastic Federation Regional boys and girls basketball tournament opens Thursday throughout the state. All girls games and non-doubleheader games involving boys start at 6 p.m. Doubleheader boys' games begin at 8 p.m.
As expected, the Southern Section has by far the most teams left with 27, followed by North Coast (11), Sac-Joaquin (10), Central (nine), Los Angeles and Central Coast (eight), San Diego and Northern (four), along with Oakland and San Francisco (two). Regional Open quarterfinal play was completed Wednesday with the semifinals on Saturday.