I was curious so I decided to look around baseball-reference/fangraphs to see just how good or bad the corner OFs (particularly LFs) have been in the DD era. I'll keep it limited to a few stats and total team stats at that position. Quite a trip down memory lane, for better or for worse.
Main players in parentheses, ordered by innings, highest to lowest (min 150 inn).
Left Field
2002: 95 wRC+, .317 wOBA, -11.1 UZR/150, 0.3 WAR (Higginson, Lombard)
2003: 109 wRC+, .338 wOBA, -17.3 UZR/150, 2.2 WAR (Monroe, Dmitri Young)
2004: 112 wRC+, .347 wOBA, 4.3 UZR/150, 5.4 WAR (White, Monroe, Thames)
2005: 105 wRC+, .334 wOBA, -0.7 UZR/150, 3.0 WAR (White, Monroe, Thames)
2006: 104 wRC+, .342 wOBA, -2.9 UZR/150, 2.0 WAR (Monroe, Thames)
2007: 80 wRC+, .305 wOBA, -0.9 UZR/150, -0.2 WAR (Monroe, Thames, Perez)
2008: 95 wRC+, .326 wOBA, -9.3 UZR/150, -0.1 WAR (Thames, Joyce)
2009: 98 wRC+, .335 wOBA, 4.6 UZR/150, 1.5 WAR (Raburn, Guillen, Anderson)
2010: 98 wRC+, .324 wOBA, 4.0 UZR/150, 3.8 WAR (Raburn, Boesch, Kelly, Damon)
2011: 102 wRC+, .327 wOBA, 0.2 UZR/150, 2.6 WAR (Boesch, Delmon Young, Raburn, Dirks)
2012: 89 wRC+, .306 wOBA, -4.9 UZR/150, 0.8 WAR (Dirks, Berry, Delmon Young, Raburn)
2013: 90 wRC+, .308 wOBA, -3.1 UZR/150, 2.3 WAR (Dirks, Tuiasosopo, Kelly)
Right Field
2002: 103 wRC+, .329 wOBA, -2.8 UZR/150, 1.7 WAR (Fick)
2003: 82 wRC+, .300 wOBA, 2.2 UZR/150, 0.0 WAR (Higginson, Monroe)
2004: 107 wRC+, .340 wOBA, 6.0 UZR/150, 3.5 WAR (Higginson, Monroe)
2005: 98 wRC+, .323 wOBA, -14.1 UZR/150, 1.3 WAR (Ordonez, Monroe)
2006: 110 wRC+, .350 wOBA, -7.4 UZR/150, 1.9 WAR (Ordonez)
2007: 158 wRC+, .420 wOBA, 8.0 UZR/150, 8.2 WAR (Ordonez)
2008: 126 wRC+, .372 wOBA, -14.8 UZR/150, 3.5 WAR (Ordonez, Joyce)
2009: 94 wRC+, .328 wOBA, -1.6 UZR/150, 2.4 WAR (Ordonez, Thomas)
2010: 115 wRC+, .349 wOBA, -3.6 UZR/150, 4.3 WAR (Ordonez, Boesch, Wells)
2011: 94 wRC+, .315 wOBA, -5.5 UZR/150, 1.5 WAR (Ordonez, Boesch, Wells, Kelly)
2012: 79 wRC+, .291 wOBA, -17.7 UZR/150, -2.6 WAR (Boesch)
2013: 117 wRC+, .346 wOBA, -5.7 UZR/150, 2.5 WAR (Hunter)
The only standout seems to be Magglio's MVP-type year in 2007.
A lot of mediocre seasons with quite a few duds, both offensively and defensively...also take note of the carousel that is LF.