Kayfus went 1-for-4 in Saturday's 10-1 loss to Atlanta.
Kayfus, who got off to a strong start in the majors, has hit the skids of late. Over the last six games, the rookie has gone 2-for-18 (.111) with a 25.0 percent strikeout rate. Overall, Kayfus has struck out 14 times in 44 plate appearances (31.8 percent).