It's the first time in at least five years that another club has hired away a coach from the Phillies' MLB staff.

Read - Phillies lose key staff member as Diamondbacks hire former assistant as pitching coach - and more Phillies news and rumors at PhilliesNation.com.

A day after losing assistant pitching coach Brian Kaplan to the Arizona Diamondbacks, the Phillies promoted 32-year-old Mark Lowy to fill his role on the coaching staff.

Brian Kaplan, who spent the past three seasons with the Phillies, has been hired by the Diamondbacks to replace Brent Strom as the team's pitching coach.

The Diamondbacks announced that they have hired Brian Kaplan to be their new pitching coach. He will replace Brent Strom,

Philadelphia Phillies announced that Mark Lowy would take over as the team’s new assistant pitching coach as he will replace Brian Kaplan, who has joined Arizona Diamondbacks

The Phillies announced the hiring of Mark Lowy as assistant pitching coach. He assumes the position vacated when Brian Kaplan was tabbed as Diamondbacks pitching coach on Tuesday. Lowy moves onto an MLB staff for the first time.

The Phillies announced the hiring of Mark Lowy as assistant pitching coach. He assumes the position vacated when Brian Kaplan