Masahiro Tanaka will not make his scheduled start on Sunday against the Cleveland Indians.
The right-hander was placed on paternity leave Saturday morning after his wife gave birth to a newborn girl on Friday, their second child together.
The Yankees recalled RHP Nestor Cortes Jr. to fill Tanaka's spot on the roster, although Tanaka is expected to be back and start on Monday against the Mets.
Cortes has appeared in four games for the Yankees this year, all out of the bullpen, pitching to a 4.91 ERA in 11 innings while striking out 13.
It is unclear if Cortes will get a spot start or will if the Yankees will use him out of the bullpen as part of an opener strategy, which they did May 19 against the Rays.
Tanaka is 3-5 with a 3.42 ERA and 1.19 WHIP with 67 strikeouts in 76.1 innings pitched this season.