Young Ryan Gray set up TCOB's second goal as his shot clanged off the pole and Tyler Nicholl-Hylton swooped in for the rebound to score.
In the second half, TCOB created many chances, but it was not until they were awarded the stroke after a penalty corner attempt that Mark Lyles raised the third goal right on fulltime.
"They made hard work of it," said coach Colleen Baylis. "Some of the option taking let us down a bit. Defence worked quite well today, but the intensity was crap.
"They could have won 7-0 if they'd picked up the intensity."
But TCOB were left feeling nowhere near as empty as Collegians after their 14-0 thumping by High School Hockey Club at the Twin Turfs.
"Worst ever loss that I can remember," said manager Kellie Watkin.
"We had a full complement, but apart from Michelle [Mitchell] and Lisa [Grant], and Pania [Matapare] came on in the first half, they're all under 18."
Table topping HSHC would not have even needed to employ all of their signature physical style of play - but that didn't stop them.
Collegians will now face the HSHC Rebels this Saturday, but problems with their transient lineup continue as five schoolgirl players will be involved with other sports.