ESPN’s Jeff Passan was the first to report on Thursday night that the Miami Marlins had traded left-handed relief pitcher A.J. Puk to the Arizona Diamondbacks for two prospects. According to Passan, the Marlins got 21-year-old power-hitting prospect Deyvison De Los Santos, a corner infielder, and 23-year-old center fielder Andrew Pintar in return. De Los Santos, who turned 21 on June 21, has had a big year in Double-A and Triple-A this season, crushing 28 home runs in 342 at-bats and piling up a 1.011 on-base-plus-slugging percentage (OPS) to go with his .325 batting average. In 551 career at-bats in the minor leagues, Pintar has hit .266 with a .768 OPS. Puk, 29, hasn’t allowed an earned run in his past 16 2/3 innings, and while his 4.30 ERA looks pedestrian, it was decimated in the first month of the year when, miscast as a starting pitcher, he opened games for his first four appearances of the season, getting hammered for 14 earned runs in those 13 2/3 innings (9.22 ERA). Since then, Puk has a 2.08 ERA in 30 2/3 innings. In two seasons in Miami, Puk had a 4.11 ERA in 100 2/3 innings.