How are Seattle Mariners’ top 20 prospects faring in 2015?

Seattle Mariners minor league infielder Ketel Marte made a name for himself in Sunday’s 2015 MLB Futures Game in Cincinnati, when he returned to action after missing more than a month with a broken thumb to go 2-for-2 with an RBI for the World team.

Mariners minor leaguer Ketel Marte went 2-for-2 in the 2015 MLB Futures Game on Sunday. (Joe Robbins/Getty Images)Despite the broken thumb, Marte — the No. 3 ranked prospect in the Mariners system — had arguably the best first half of any M’s farmhand, batting .343 in 51 games with Triple-A Tacoma before suffering his injury.

Some of Seattle’s other prospects — including Alex Jackson and D.J. Peterson, the two ranked above Marte in most experts’…