Snake bites

• Mired in an 8-for-55 (.145) slump since April 12, Martin Prado batted leadoff Saturday for the first time this season. The 29-year-old has seen his batting average drop from .304 to .218 over the stretch.

In 134 career starts batting first, Prado has a .298 batting average with 19 homers and 71 RBIs.

• Prado isn't the only D-backs player cold at the plate right now. Since April 11, Miguel Montero and Cliff Pennington are a combined 10-for-77 (.130).

• The D-backs have held the lead in 16 of their 23 games this season.