White will serve as the primary pitcher during Tuesday's game against the Cardinals, David Vassegh of AM 570 LA Sports reports.
The right-hander was called up Sunday, and he'll work behind an opener Tuesday. Although manager Dave Roberts hasn't indicated who the opener will be, White should be able to handle multiple innings during the contest. Across five major-league appearances since the All-Star break, the 26-year-old has posted a 3.10 ERA and 1.13 WHIP in 20.1 innings.