PHOENIX -- Their Gerardo Parra bobblehead dolls safely stashed away, some in the Chase Field crowd seemed dismayed when Chris Young was called on to pinch-hit for Parra on Saturday night. They might not have liked it, but they could have seen it coming.
Do not get manager Kirk Gibson started on the "p" word. He does not buy into platoons. But it is as good as any way to describe the Diamondbacks center field situation these days.
The D-backs have alternated Parra and Young over the last three weeks based almost solely on the throwing arm of the opposing pitcher. Young has started the last nine games in which the D-backs faced a left-hander, and he walked in his pinch-hit appearance against a lefty Saturday. Parra has started 10 of the last 11 games against right-handers. It is new for Young, who has been the full-time starter since 2007 except for a short return to the minor leagues in 2009, but he is adjusting.
A cursory look at the numbers suggests that is the way to...