Vientos went 1-for-4 with a walk, a solo home run and a second run scored in Friday's loss to the Giants.
The 24-year-old continues to stake a claim to the starting job at third base ahead of Brett Baty. Since getting called back up to the majors May 15, Vientos has gone 8-for-25 (.320) with six extra-base hits, including two of his three big-league homers this season, and a 4:6 BB:K.