NEW YORK -- Credit reliever Ernesto Frieri for being receptive to making a mechanical change to help remedy his command issues.
If only his back was just as enthusiastic.
Frieri was placed on the 15-day disabled list on Monday with a lower back strain -- the result, he said, of a mechanical adjustment he tried to make recently, in addition to the late flight the team took Sunday from Pittsburgh to New York.
"After the flight from Pittsburgh, my back felt really, really bad," Frieri said. "I couldn't sleep."
Frieri has been working with pitching coach Darren Balsley on trying to help harness his command, which has been amiss at times this season, as he's walked 29 and also hit nine batters in 46 appearances and 49 1/3 innings.
"I want to say the main reason this happened is changing my mechanics ... trying to step straight [toward the plate] and get on top of the ball instead of throwing across by body like I do," Frieri said. "But that wasn't comfortable."
Frieri said his back was feeling better Tuesday. When he's cleared to throw again, he will work again with Balsley on his command.
"I've been fighting all year to find the strike zone," Frieri said.