Treinen pitched a clean eighth inning while striking out a batter to secure a hold in Sunday's 5-1 win over Atlanta.

Treinen (chest) was reinstated from the 15-day injured list Sunday, Kirsten Watson of Spectrum SportsNet LA reports.

Dodgers manager Dave Roberts said Friday that Treinen (chest) could be activated from the 15-day injured list during the weekend series against Atlanta, Mike DiGiovanna of the Los Angeles Times reports.

Treinen (chest) has joined Triple-A Oklahoma City to begin a rehab assignment, Eric Stephen of SBNation.com reports.

Treinen (chest) faced live hitters ahead of Saturday's game against the Mets, Eric Stephen of SBNation.com reports.

Treinen (chest) faced a pair of live hitters ahead of Sunday's series finale with the Padres, Fabian Ardaya of The Athletic reports.

Treinen (chest) has yet to face hitters and remains weeks away from a return, David Vassegh of AM 570 LA Sports reports.

Dodgers manager Dave Roberts said Friday that Treinen (chest) is "weeks" away from a return, Jack Harris of the Los Angeles Times reports.

Treinen (chest) threw long toss from roughly 150 feet Saturday, Fabian Ardaya of The Athletic reports.

Dodgers manager Dave Roberts said Thursday that Treinen (lung) is "a ways away" from returning, Eric Stephen of SBNation.com reports.