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Both versions of WAR agree there's a drop-off between fourth place and fifth, although both sites agree on Darin Erstad as that fifth-best player.
The outfielder spent an overwhelming majority of his career as an Angel, playing there for eleven of his fourteen seasons.
In that time, Erstad was worth 30.4 bWAR and 28 fWAR. B
Both are very solid, but they don't quite measure up to the players ahead of him. He doesn't really have any other major factors to consider like a Hall of Fame case or an induction into the Angels Hall.
However, he did only just retire in 2009, so there's plenty of time to see if anything develops for his retired-number candidacy.
Next going down the list is Garrett Anderson.
A fifteen-year veteran of the team (194 to 2008), Anderson is actually also the franchise leader in games played and plate appearances.
That’s probably worth some extra credit, even if his value in that time (23.6 bWAR, 28 fWAR) was a little less than some other players’.
He just recently retired (2010 was his final season). Though I’m not sure he’s likely to see his number honored, there’s still plenty of time for us to see otherwise.
After Anderson, there’s a small plateau of players at a similar level, followed by another fall off.
This small group of six of players is probably about as far down the list as we can seriously consider before looking elsewhere. And, even then, most of their cases are riddled with holes.
Three of them are Troy Glaus, Chone Figgins, and Wally Joyner, all of whom have a similar case. They all came up as Angels, had some great years, then left as free agents. The details are really what set them apart.
Joyner played six years there (1986 to 1991), left, then returned at the end of his career (2001). His time in Anaheim earned him 17.4 of his 32.2 career bWAR and 21 of his 40 career fWAR.
Glaus spent his first seven years there (1998 through 2004) before leaving and playing his final six seasons elsewhere. Overall, his stint in an Angels uniform garnered 20.8 of his 35.0 career bWAR and 21 of his 37 career fWAR.
Finally, Figgins spent eight seasons there (2002 through 2009), accounting for 20.8 bWAR and 23 fWAR (both sources agree that he has actually been worth negative value since joining Seattle).
Really, barring amazing fan support, none of them stands a real chance.
Doug DeCinces is sort of the opposite. He came to California as a free agent, and had a few good years (1982 to 1987, 17.5 bWAR, 20 fWAR). I would imagine his case is even worse than the case for those three, though.