Sling TV is the latest TV provider to announce it will hold a free preview of HBO and Cinemax this weekend.

The preview is part of an effort by HBO to promote two new season premieres, and the premium channel’s new season of Game of Thrones.

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The preview, which runs from Friday, July 21, through Monday, July 24, will feature HBO’s season three debut of Ballers, which stars Dwayne ‘The Rock’ Johnson, on Sunday at 10 p.m. ET.  Johnson plays a former professional football player turned financial manager.

Insecure‘s season two debut will follow Ballers at 10:30 p.m. ET on HBO. The comedy stars Issa Rae (pictured above.) as a young African-American woman who struggles to cope in an uncertain world.

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Premium channels are known for offering free previews to promote a new or returning show.  In addition to the season debuts, episode two of season seven of Game of Thrones will air Sunday at 9 p.m. ET.

DIRECTV and Dish (which owns Sling TV) previously announced they will hold the free preview of HBO and Cinemax as well.

— Phillip Swann