The Diamondbacks would like to cement rising run producer Chad Tracy into one position next season after his breakout 21-home run year, a move Tracy is all for. "It would be nice. I'd be able to know what to work on going into the offseason,'' said Tracy, who has started at both corner infield and outfield positions in his two major league seasons. The regular third baseman in 2004, Tracy took over at first base this spring before moving to right field when the D-Backs brought up first baseman Conor Jackson and started giving Tony Clark regular time at first in late July, with Shawn Green moving to center. "One thing I don't particularly want to do with him is move him around. A young guy like that, you want to try to lock him into a position,'' manager Bob Melvin said.