Sharks coach Atiba Lyons was left disappointed with his team after they struggled to victory over second from bottom Surrey United on Friday night at the EIS.
Sheffield were nearly on the end of one of the BBL’s all time shock results until a late burst saw them past their much-improved opponents.
Lyons said: “We came out cocky; we came out over-confident. Egos showed up tonight. This team is still a bit immature. It’s still young.
“I need to make sure I find the right guys that can go out there and compete at the right level without distractions.”
Sharks trailed 26-17 at the end of the first quarter as United duo Isaiah Tate and Elvisi Dusha controlled the match.
Sheffield turned on the style in the second quarter with a 23-6 run up to half time to lead 42-37.
But United responded again to take a 59-57 advantage into the final period.
Sharks slipped 64-60 behind before back-to-back three point shots from BJ Holmes finally sparked them into life.
A 9-3 run up to the buzzer sealed the victory for an under-par Sharks.
Sheffield travel to Glasgow Rocks tomorrow (5pm) for their penultimate away match in the regular season.
* Sharks: Holmes 22, Horstmann 14, Lewis 12, Babalola 12, Jemison 9, Simmons 7, Gachette 6, Tuck 5.