This is not very good news, because Willie Harris really isn't a very good player. And he certainly doesn't stack up against other rightfielders around the league. After all, last year, the average rightfielder hit .270 / .345 / .446. Harris hit .235 / .364 / .393, and CHONE projects him at .243 / .350 / .377 for 2010. That's a big gap.
But here's the crazy thing (and I literally realized it just as I was sitting down to write a different post altogether). As underwhelming as Harris is, there's a good number of right fielders who aren't much if at all better.
Check it out. Here's the list of 30 projected starting right fielders around the league, ranked by projected wOBA (the Tom Tango rate stat for overall offensive production):
We see Willie's near the bottom, but he's not the worst by any means. The whole bottom half of this list is pretty grim. And factor in that CHONE don't really like Harris very much (Marcel, PECOTA, and ZIPs all expect a little better), and if he's average or better in the field, you could easily seeing him as the second best rightfielder in the division, somewhere in the Garrett Jones/Kosuke Fukudome range of overall value.
He doesn't look the part, and he'll never be the guy who delivers a World Series trophy to DC, but Willie Harris in right field clearly is not the team's biggest problem.