Greinke was placed on the paternity list Thursday.
With this news, Greinke will be away from the Diamondbacks for a few days. The 33-year-old just took his turn in the rotation Wednesday, so he should be back with the team and ready to make his next scheduled start against the Tigers next week. Silvino Bracho was recalled from Triple-A to offer another bullpen arm while Greinke is away.