not necessarily a flash in the pan but he is going to be far from consistent. i would not plan on starting brown as your OF3 for the entirety of the season in any way. is he worth owning and playing right now? of course. he might be on the verge of a slump, but he has been better at home than on the road and theyve been on a road trip so its possible that is accounting for his recent lack of production
I personally prefer to have 3 really solid OF and then use guys like Brown and Puig as UT. That said, if the right trade offer came up and I had to move Brown to my OF3 spot I wouldn't be that concerned about it. He will regress but I think he'll end the year in the middle of the NL HR race.