Biggar was on target with the conversion before the Ospreys saw the game out to seal a 10-6 victory and move up to second in the RaboDirect PRO12 with the Scarlets due at the Liberty Stadium next Friday.
"I think there was a bit of everything there" said man of the match Jones.
"Usually, the derbies go one of two ways; either you get a lot of rugby played and it's unattritional or it's attritional, you don't get much rugby and it's the battle of the boot.
"In fairness to the Scarlets I think they were in the ascendancy for a large proportion of the game even though we had a lot of territory.
"Our error account is pretty disappointing but we'll take heart from the way we rallied at the end.
"We probably hadn't been patient enough earlier in the game and tried a little too hard.
"We coughed up the ball, especially in the first half, and they capitalised on that, playing what was possibly a superior kicking game, for parts of the game at least, which kept us under pressure.
"Sometimes we do put a little too much emotion, or emphasis, on these derby fixtures to the detriment of other games, but I do like the notion of playing them back to back, especially this time of year."
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Guinness PRO12 Ospreys News
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