The AP reports: Chauncey Billups is learning on the job. Meanwhile, the Denver Nuggets keep winning. Carmelo Anthony scored 24 points, Billups had 16 points and 10 assists and the Nuggets beat the Memphis Grizzlies 100-90 on Sunday night… The Nuggets had 22 turnovers, but they played tough defense in the second half, holding Memphis to 36 points and 28 percent shooting. They shut down rookie guard O.J. Mayo, who scored a season-high 31 but managed only five after halftime… Nene had 18 points and 12 rebounds for the Nuggets, who had six players score in double figures.