Fermin Recalde, guilty of murder for fatally stabbing his girlfriend in 2010.

Darren Nesbitt, a Miami security guard, guilty of manslaughter in the Allapattah slaying of a 17-year-old girl.

Late Friday in Miami-Dade Circuit Court, juries convicted both men, in unrelated cases,

Prosecutors said that Recalde, 43, enraged by jealousy, plunged a blade into the chest of girlfriend Dora Rial, of Hialeah.

She died in her teenaged daughter’s arms.

Recalde murdered Rial, a manager at a Hair Cuttery salon, on the same day she attended her son’s graduation from auto mechanic school.

Her 16-year-old daughter, a Hialeah High softball player, testified about overhearing the fight in a bedroom adjacent to hers.

Miami-Dade Circuit Judge Victoria Brennan immediately sentenced Recalde to life in prison on the first-degree murder conviction.

Recalde’s case drew headlines in September when his first trial ended in a mistrial.

The reason: His lawyer, whom he had tried to fire, posted a mocking photo of Recalde’s leopard-print underwear on her Facebook account.

The lawyer later was fired from the Miami-Dade Public Defender’s Office.

As for Nesbitt, 42, police said he shot and killed Danielle Wooden, whose half-nude body was discovered at an Allapattah loading dock in January 2010.

Nesbitt originally was charged with second-degree murder with a deadly weapon.

Police tied him to the slaying scene by cell phone technology and a DNA match, Miami Detective Fernando Bosch told jurors.

Nesbitt also was convicted of unlawful sexual activity with a minor.

He faces up to 45 years in prison. Miami-Dade Circuit Judge Marisa Tinkler Mendez will sentence him in March.