Will James Loney turn his doubles into home runs?

Gary A. Vasquez/US Presswire

James Loney hit 19 homers in his first 446 career at-bats. He hit 10 in 588 at-bats last season.This excerpt from Tony Jackson's piece for ESPNLosAngeles.com today on James Loney, Matt Kemp and Andre Ethier got me thinking about Loney:

The lefty-hitting first baseman has never hit more than 15 home runs in a season and hit only 10 of them in 2010, but he had a career-high 41 doubles and drove in 88 runs, his third season in a row with at least that many RBIs. Still, general manager Ned Colletti and manager Don Mattingly continue to insist that Loney is a potential power hitter, and they remain determined to get him to reach that potential.

But Loney has now spent five seasons in the majors, enough to make an outsider wonder if this is simply who Loney is: a gap-to-gap, line-drive, doubles hitter who manages to drive in a lot of runs and still be reasonably productive without going deep very often.

My initial reaction is that I've never really expected Loney to become much more than what Jackson describes in that last sentence. Mark Grace has often been cited as the best-case scenario for Loney, and Grace never hit more than 17 homers in a season — and that's with playing half his games in Wrigley Field.

But for curiosity's sake, I used Baseball-Reference.com to pull the list of 27-and-under players who, since 1990, have had at least 40 doubles in a season without hitting more than 15 home runs that same year. I then looked to see what their career highs in home runs were or are.

Here's what I found — take it with several grains of salt as a mere conversation starter:

35 Garret Anderson

32 Brad Fullmer

29 Robinson Cano

29 Kevin Youkilis

29 Dmitiri Young

28 Joe Mauer

27 John Valentin

25 Sean Casey

24 Roberto Alomar

24 Eric Hinske

24 Alexis Rios

24 Jose Vidro

23 Nick Markakis

21 Billy Butler

21 Marcus Giles

21 Shannon Stewart

20 Jimmy Rollins

18 Chuck Knoblauch

18 Brian Roberts

17 Orlando Cabrera

17 Jeff Cirillo

17 Dustin Pedroia

17 Todd Walker

16 Gregg Jeffries

16 Edgar Renteria

15 Martin Prado

14 Deivi Cruz

14 Felix Jose

13 Mark Grudzielanek

12 Jack Wilson

11 Alberto Callaspo

10 Howie Kendrick

6 Asdrubal Cabrera

5 Jody Reed

The best-case scenario would be Anderson, who had 41 doubles and 15 homers at age 26 with a .780 OPS. (The year before, he had 36 doubles and eight home runs with a .743 OPS.) Over the next five seasons, he averaged 44 doubles and 28 homers with an .836 OPS that would have been even higher if he could have drawn much more than a walk per week (29 walks per year).