Former Oregon Ducks stud Keanon Lowe is being touted as a hero today ... Portland high school students are praising the ex-WR for stopping a gunman who was near campus Friday.
Lowe -- one of Marcus Mariota's favorite targets back at Oregon -- reportedly tackled a man with a gun near the tennis courts at Parkrose High School in Northeast Portland.
Unclear what the man's intentions were -- cops have yet to say his motive -- but Oregon Live reports, "a parent said students reported that the suspect, a fellow student, had brought a gun to the school with the intention of committing suicide.