Eddie Howe enjoyed what he described as “a really big night for the club” as Bournemouth defeated Southampton 2-0 at Dean Court.
Steve Cook and Benik Afobe struck as the Cherries claimed their first home league win over south coast rivals Saints since 1958 in a low-quality encounter.
Bournemouth dominated throughout and fully merited a victory that sends the Cherries eight points clear of the drop zone in their maiden Premier League campaign.
Cherries boss Howe hailed what he hopes can now prove a pivotal victory in his side’s bid for top-flight survival.
“It feels like a really big night for the club, beating our local rivals,” Howe said. “For our survival hopes it’s a massive result as well.
“Our destiny even before the game was in our hands. We certainly have that attitude: we can’t rely on other teams to slip up.
“We need to attack things and try to get there ourselves.”
Howe confirmed forward Junior Stanislas has suffered a hamstring tear and could be out for six weeks, Harry Arter picked up an Achilles problem and Joshua King an ankle complaint.
“Junior Stanislas has got a tear in his hamstring, so he’ll be four to six weeks,” Howe said. “That’s a real blow to us because he’s been excellent.
“Harry Arter has a potential Achilles problem, and Joshua King felt pains in one of his ankles.”