Big break for Nate Hobbs in his DUI case ... prosecutors say toxicology results revealed the Raiders player was UNDER the legal limit of .08 during his arrest earlier this month.
The Clark County District Attorney's Office made the announcement Wednesday ... saying blood analysis following Hobbs' Jan. 3 arrest in Las Vegas showed "Hobbs was under the legal limit for a DUI charge."
Prosecutors say as a result of the tests ... they did not pursue a DUI charge against Hobbs, and instead, they say the NFL cornerback ended up pleading guilty to a misdemeanor charge of unlawful manners of driving -- careless driving.