The Braves’ outfield has taken a couple of Uptons, the Mets’ more downturns.

The evidence was overt yesterday at Tradition Field as the Braves travelled with their newly configured starting unit of Jason Heyward, B.J. Upton and Justin Upton (who was the designated hitter).

Meanwhile, there was Lucas Duda in left, Matt Den Dekker in center and Marlon Byrd in right, which might have the distinction of being the starting unit for both the 2013 Mets and the 2014 Long Island Ducks.

But how could anyone pinpoint the Mets’ starting outfield when even their manager, Terry Collins said, “I don’t know who it is” four weeks before the season opener. He could close his eye and pick the names out of a hat or, well, he could just close his eyes. Because it is possible the Met outfield will be the worst unit of any type — outfield, infield, starting pitching, etc. — in the majors.

These two outfields define why the Braves are viewed as contenders and the Mets are not, though both are operating with roughly the same $90 million payroll. And it isn’t like the Mets are skimping on outfield and outdo Atlanta elsewhere, heck you can make a case that the Braves have the best bullpen in the majors.

Using Wins Above Replacement (WAR) as a barometer because it provides a statistic that accounts for both offense and defense, Atlanta’s outfield was tied for fourth best in the majors last year with Oakland while the Mets were 29th, ahead of just wasn’t-even-trying Houston.

Yet, Braves general manager Frank Wren described the grouping of Heyward, Michael Bourn and mostly Martin Prado as “good, solid, but it didn’t profile with the power and speed that we wanted.”

So they signed B.J. Upton to a five-year, $75 million contract and traded very good — but not great — prospects to Arizona for Justin Upton.