The introduction of replacement Denis Hurley added some spark to Munster's attacks but as they went in search of a second late try, they were met by strong resistence from Collins and company.
Speaking afterwards, Ospreys coach Sean Holley singled out Collins, Biggar and Davies for their efforts in helping the region make a winning return to league action.
"We made Jerry captain this week as soon as we knew Ryan (Jones) was unavailable, he's been in this environment through the autumn, and he led from the front again tonight.
"He gives an edge in attack and defence, we saw him pick and go through the middle a bit tonight, and people respond to him. He's a quiet operator but a likeable one.
"I thought Dan Biggar showed his maturity tonight, particularly in the second half. He put us in the corners and gave Munster a bit of their own medicine really, I think there was a touch of the O'Garas about his performance!
"His goal-kicking is pretty good at the moment as well. He had a chance to go for goal at the end, but the players on the pitch made that decision, and Dan was instrumental in that.
"Liam Davies hasn't been with us long, and hasn't had a lot of rugby with us yet, but he was outstanding. He's just been named players' player of the day in the changing room and that says a lot.
"But, I've just said in there that no scrum half plays outstandingly well unless they've got a good pack in front of them, and credit has to go to our pack tonight."
|Ospreys Score Card|
|Munster Rugby Score Card|