Mariners manager Scott Servais (upper left) tracks his club’s defense earlier this week in a game against the Arizona Diamondbacks.
Mariners manager Scott Servais (upper left) tracks his club’s defense earlier this week in a game against the Arizona Diamondbacks. Charlie Riedel AP
Mariners manager Scott Servais (upper left) tracks his club’s defense earlier this week in a game against the Arizona Diamondbacks. Charlie Riedel AP

Mariners notebook: Implementing defensive shifts remains a work in progress

March 10, 2016 09:18 PM