Diamondbacks concerned with Josh Collmenter's velocity

Diamondbacks manager Chip Hale said the team has noticed a small decline in pitcher Josh Collmenter's fastball, which they are concerned about, reports MLB Network Radio.

Collmenter typically tops out at around 87-88 mph with his fastball, but it has been hovering around 84-85 mph recently. Collmenter has lost his last three decisions and his last win came on May 6.