Since he was the 1st player that popped into my mind when I thought about low obp outfielder... Mark Trumbo has a career obp of .300, probably a reasonable guess for Rosario at this point. He's had 22, 29, 32, 34 home run seasons, and reached the .800 ops mark only 1 time, with a career mark of .758. I think the .459 slg% Rosario put up last year may end up being a career high... Hard to see him ever approaching those triple numbers again. I'll predict something like .270/.300/.400 this year. I agree with those that said LF is Keplers most likely spot this year