Detroit — For the eighth time already this season, the Tigers had a baseball game postponed.

For the fourth time this season, they will play a make-up doubleheader.

Rain postponed the scheduled game with the Mariners Friday night. The two teams will play a straight doubleheader Saturday beginning at 4:10 p.m. The second game will start approximately 30 minutes after the first game ends.

The pitching match-ups aren’t expected to change. The Tigers will go with left-hander Matthew Boyd in the opener, opposed by Mariners right-hander Marco Gonzalez.

In the second game will pit former American League Rookie of the Year Michael Fulmer against former Cy Young Award-winning Felix Hernandez.

Fans who have a paid ticket for Saturday can use it for both games. Fans with paid tickets for the postponed game Friday can exchange their unused tickets at any time for any similar or lesser-priced regular season game in the next 12 months — though not Opening Day 2019.

More: Ex-Tiger Andrew Romine catches a break with wildfires, Mariners

Roster move

The Tigers optioned right-handed reliever Johnny Barbato back to Triple-A Toledo. He had pitched in three games and allowed three runs in 3⅔ innings. The Tigers will likely call up two players from Toledo on Saturday — one to replace Barbato and another to fill a 26th roster spot which the league allows for make-up doubleheaders.