Four of the eight position starters -- shortstop Dee Gordon, right fielder Andre Ethier, third baseman Aaron Miles and catcher Rod Barajas -- were replaced by Jamey Carroll, Tony Gwynn, Russell Mitchell and A.J. Ellis.
Mattingly said the main reason was the quirky scheduling resulting from Thursday's rainout makeup game in Pittsburgh. That was preceded by a day game Wednesday in Los Angeles, followed by a pair of night games in Atlanta and back-to-back day games Sunday in Atlanta and Monday in Washington.
"This three-city tour, with back-to-back day games, I'm trying to get guys rest," said Mattingly. "Everybody is playing well, so there's no reason not to get Aaron some rest, Jamey got a day off and he's back. Dee played five straight. A little of it is lefty-righty. [The Braves started left-hander Mike Minor on Saturday.] A lot of it is keeping everybody fresh with energy."