SAN ANTONIO — Tim Duncan conducted his postgame interview flanked by his two children. Someday soon he may decide that they, and not Tony Parker and Manu Ginobili, will be his full-time running mates. Duncan's eventual retirement — whether it's next week, next summer, or after the next championship — probably won't end of what's been a 15-year run at or near the top for the San Antonio Spurs.
Spurs could stick around, even if Duncan doesn't

