For Celtics games at the Garden, the visiting team will enter the court through the tunnel between sections 3 and 4. Consider seats in the first 10 rows of these sections to be close to the players as they enter/exit the court.

Visiting team entering the court, as seen from section 5

Alternatively, consider the first seven rows (A-G) of section 5. As the players enter the court, they will be running towards these rows before veering off towards the bench.