Sandoval, 34, has hit .220/.278/.268 with one homer and six RBIs in 33 games this season. The switch-hitter played 14 games as the designated hitter, eight as a first baseman and four as a third baseman with the Giants.
The Braves added Sandoval their 40-man roster, transferring lefty Cole Hamels to the 45-day injured list. Tucker Davidson was optioned to the alternate training site to open a roster spot. Davidson made his first MLB start Saturday night.
Braves third baseman Austin Riley has missed four of the past five games with quadriceps discomfort. Adeiny Hechavarria had filled in, but the usually reliable defender made four errors in three games.
The Braves' finale had no impact on the standings. As the National League’s No. 2 seed, they’ll host the seventh-seeded Reds for a best-of-three at Truist Park next week.