De Leon's contract was selected by the Dodgers on Friday and he will start Sunday's game against the Padres, the Los Angeles Times' Bill Shaikin reports.
The promotion eases the concerns of owners who had been stashing De Leon for much of the second half of the season. Now that the Dodgers have added him to the 40-man roster, he figures to stick in the rotation for the foreseeable future. De Leon posted a 2.61 ERA, 0.94 WHIP and 111 strikeouts in 86.1 innings at Triple-A this year, illustrating the upside he offers fantasy owners over the final month of the season. He will get a pretty easy first start, facing a Padres offense that has been the third worst in baseball (according to wRC+) over the last month.