David Peralta - OF, ARI
Once upon a time, Peralta was a pitcher in the Cardinals system. When that wasn't working out, he decided to reinvent himself as a hitter in an independent league. Liking what they saw, the Diamondbacks signed him last year and sent him to Single-A, where he crushed with a .346/.370/.534 hitting line in 51 games.
He got off to a strong start in Double-A this year, batting .297/.359/.480 with six homers and 46 RBI in 53 games, and was called up in early June to help out the Arizona outfield.
What initially looked like a part-time role has blossomed into a regular gig for the 26-year-old, who is taking full advantage of the opportunity in front of him by consistently blistering the ball for the D-Backs.
In 34 games as a big-leaguer, the outfielder is hitting .325 with an 811 OPS, having compiled 10 extra-base hits (three homers) and two steals in 131 plate appearances. He shows no signs of slowing down; over his last 10 games he's batting .429. He has taken over as Arizona's full-time left fielder, having started 31 of the team's 35 games since being called up.
Peralta is much weaker against lefties than righties, but has hit well enough to stay in the lineup against everybody. He's got some power, some speed, and a very hitter-friendly home park. He has also gone from hitting at the bottom of the lineup to the middle and top, providing him with ample opportunity to drive in and score runs.
He's a great story, but even beyond all that, Peralta has plenty to offer from a fantasy perspective and he's owned in less than 10 percent of all leagues.
Chris Dickerson - OF, CLE
Michael Bourn was having a fairly disappointing season for the Indians, and now it looks like he'll be out for at least a month with a moderate hamstring strain. That's the kind of injury that tends to linger, especially for a player whose game is so dependent on speed.
In an effort to replace what the veteran brought to the table, Cleveland went out and acquired Dickerson, who had been excelling in Triple-A for the Pirates. Like Bourn, Dickerson is a fleet outfielder with a bit of pop and good defensive skills.
There's a decent chance that he'll be able to surpass the modest bar that was set by Bourn over the first three months.
While playing with Class-AAA Indianapolis, Dickerson was hitting .309/407/.479 with seven homers and 12 steals in 65 games. He's played 315 total games in the majors since debuting in 2008, posting a 746 OPS. He's never really been a prolonged regular in the big leagues but should get a chance to log some significant playing time with Bourn on the shelf and Nyjer Morgan already out.
Now, Dickerson doesn't offer any great level of upside as a 32-year-old who's been around for some time. Last year, in 109 plate appearances with Baltimore, he batted .238 with a miserable .266 OBP. But his career hitting line in the majors is decent at .262/.339/.406 and if he can string together a little hot streak here, he can offer some nice value in AL-only leagues. He has the ability to hit the ball out of the yard and steal some bases, as he showed in Triple-A.