Conventional wisdom indicated that former middleweight champion Peter Quillin would prevail over Alfredo Angulo.

Quillin had won his last two fights, while Angulo had split his previous four. Quillin has fought more, but Angulo has been in some real donnybrooks over the years. Both fighters are past their primes, but Quillin looked to have more left in the tank.

The oddsmakers agreed, making Quillin a prohibitive 5-1 favorite.

For three rounds at the Robobank Arena in Bakersfield, CA Saturday night, the above thinking seemed correct. Quillin, looking fresher, outworked the plodding Angulo.

Things changed dramatically in round four when Quillin, either by choice, or age -decided to stand in the pocket and rumble with Angulo.

Bad idea.

Near the end of the stanza, Angulo (26-7-1, 21 KOs) clocked Quillin (34-2, 23 KOs) with a right hook that shook the former champion to his toes.

Hurt, but game, and with no where to hide, Quillin,36, fought back, but the man nicknamed “El Perro” had taken control of the bout.

The determined Angulo,37, stunned Quillin in rounds six and seven. Quillin dug down deep and fought back the best he could, but his inability to move and absorb punches without incident was problematical. The all-action fight continued down the stretch with Angulo landing the heavier shots.

Two ringside judges saw Angulo the victor by scores of 97-93 and 96-94-while a third had Quillin the winner by two points.

“Mexican heart is difficult to overcome in the ring,” said the bruised Angulo in the ring.

I’ll say.