Bad news for the dude who stormed the field at Dodger Stadium to propose to his girlfriend last week ... TMZ Sports has learned he's been hit with a 1-year ban for the stunt. Ricardo Juarez revealed the punishment to us on Monday -- saying he can't go back to Chavez Ravine for 12 more months due to his impromptu proposal -- but, as you can imagine, he wasn't all that upset over it.