Simon Brown, undefeated Washington junior welterweight, gets his first chance to fight in his home area when he takes on veteran Ruby Ortiz tonight at Prince George's Community College in Largo.

Brown, fighting out of the Latin Connection boxing club on Columbia Road NW, built his 11-0 pro record over the last two years in Atlantic City, N.J. Ortiz, a 29-year-old New Yorker, is 26-7-3 with losses to such respected fighters as Esteban de Jesus and Alfredo Escalera.

The eight-round feature marks the first pro boxing card in Prince George's County since Ray Leonard beat Davey (Boy) Green in March 1980 at the Capital Centre.

Brown, 19, graduated last year from Roosevelt High School in Washington. He was 54-2 as an amateur after moving here from Jamaica six years ago. Brown developed alongside Washington's other undefeated prospect, Maurice Blocker, the two training together under Jose (Pepe) Correa at the Latin Connection. Blocker is 10-0, with all his fights also at Atlantic City.

Brown's latest pro victory was over highly rated Allen Braswell of New York. Brown wrecked Braswell's 10-0 record with a knockout in 30 seconds of the first round.

There are six other bouts on the card, which begins at 8:30. The cofeature, a six-rounder, has middleweight Dexter Mason (4-1) of Washington against Ray Carroll (1-0) of Palmer Park.

Light heavyweight Mike Lee (3-1) of Laurel fights Charles Price (1-0) of Washington and welterweight Ed Sauderhoff (1-3) of Baltimore faces Chris Bowen (2-2) of Washington.