Komatsu isnt top 10 in a depleted Milwaukee system, let alone our deep system.
Here's what BA says about Komatsu:
Erik Komatsu, cf/rf
Age: 23. Position: CF (50 G), RF (38 G).
Born: Oct. 1, 1987 in Camarillo, Calif.
Ht.: 5-10. Wt.: 175. Bats: L. Throws: L.
School: Cal State Fullerton.
Career Transactions: Selected by Brewers in eighth round of 2008 draft; signed June 16, 2008.
Club (League) Class AVG G AB R H 2B 3B HR RBI BB SO SB OBP SLG
Huntsville (SL) AA .294 93 320 48 94 19 1 6 40 53 44 13 .393 .416
Komatsu's best attribute is his plate discipline, which is among the best in the minors. He's collected more walks than strikeouts this year, showing the ability to work deep counts and lay off pitches outside the zone. His quick, line-drive swing and advanced approach at the plate help him hit for a high average and get on base at a strong clip. He ranks fifth in the Southern League in walks (53) and on-base percentage (.393). The questions for Komatsu are the typical tweener profile issues: Will his defense be enough for center field, and will he have enough power for a corner outfield spot? His speed is a tick above-average and he gets good jumps off the bat, but he doesn't have the pure range to stack up against most regular big league center fielders. At 5-foot-10, Komatsu has below-average power, a difficult tool to live with from a corner outfielder and a reason why his OBP could take a tumble as more advanced pitchers attack him with greater aggression. Still, the Nationals did well to turn Hairston into a player with some on-base skills who will almost certainly be a big leaguer in some capacity, though his ultimate role might be as a solid backup.
Since we are looking for a guy with leadoff qualities, and this guy has been called no worse than a 4th outfielder, he belongs on a list of the next 10 or so guys for consideration in prospect rating.