We find our basketball heroes younger and younger these days. Keep an eye out for 13-year-old point guard Jared Rivers. The 170-pound 6-footer is on his way to Christ the King High School in September. College and NBA scouts are already taking notice. The high school’s great backcourt tradition has launched Derrick Phelps (North Carolina), Eric Barkley and Omar Cook (St. John’s), Erving Walker (Florida) and this year’s sensation, Omar Calhoun (UConn). The son of a city cop and an LI schoolteacher, Jared is “as fundamentally sound and mentally tough a youngster as I have ever seen,” says CTK JV coach Artie Cox. The new kid just led his AAU team, The New Rens, to the playoffs of the Super League JV division at Island Garden, beating the previously undefeated Blue Bombers, a squad of high-school all-stars with two 6-foot-9 15-year-olds. That’s 6-foot-9 — and growing.