Not to mention that sometimes you need to run multiple ball handlers together against certain teams. (sbnation.com)
The best drill for this is so rare because if you watch most people practice they hit multiple balls from the same spot trying to sink one. (sportstarsmag.com)
They also go for the same toys — when I throw multiple balls, they'll run towards the same ball together, and carry it back as a pair. (petsmagazine.com.sg)