The 19-year-old is filling the stat line as you would hope. In 42 games, he's hitting .282/.394/.595 (.989) with 10 doubles, 13 homers and 33 RBI. He also has 13 steals.
If the Brewers bring up Williams and they play him at third base, release Rengifo. He has no home runs and his defense is just ok. Hamilton has excellent speed but of course he has to get on base. As they say you can't steal first base. Bring Williams up.