Detroit Tigers starting pitcher Jose Urena throws out the Indians’ Jose Ramirez at first base during the third inning in Cleveland on Sunday. (AP photo)

Cleveland’s bullpen has been stellar.

“Unbelievable,” he said.

Allen recovered from a bumpy first inning to get his first win with Cleveland and the Indians leaned on their strong bullpen to complete a three-game sweep Sunday with a 5-2 win over the Detroit Tigers, who could be without slugger Miguel Cabrera for awhile.

Allen (1-1) found his rhythm after hitting a batter on his second pitch and walking two in the first. He allowed just one run and two hits in five innings.

The Tigers' Miguel Cabrera watches his RBI single against the Minnesota Twins on Sept. 14, 2016, in Detroit. (AP file photo)

After Allen left, four Cleveland relievers — Bryan Shaw, Nick Wittgren, James Karinchak and Emmanuel Clase — worked an inning each to finish it off.

Karinchak struck out the side in the eighth and Clase, throwing over 100 mph seven times, worked the ninth for a save.

Jake Bauers and Cesar Hernandez drove in early runs against Jose Urena (0-2), who had more control issues. The right-hander has given up nine walks in 7 2/3 innings this season.

Leading 3-2, the Indians scored two insurance runs in the eighth helped by two throwing errors charged to Tigers right fielder Nomar Mazara.

Wilson Ramos homered for Detroit, which scored just six runs in the series and lost both Cabrera and starter Julio Teheran to injuries.

For the first time this season, Cabrera wasn’t in the middle of Detroit’s lineup. The 11-time All-Star was placed on the 10-day injured list before the game with a left biceps strain that was affecting his sweet swing.

The four-time AL batting champion has been dealing with soreness in the muscle for a while.