Following his triumphant return at WrestleMania, The Undertaker will take on Rusev in a Casket Match at the Greatest Royal Rumble event, which takes place at the King Abdullah Sports City Stadium in Jeddah, Saudi Arabia, on Friday, April 27, at 7 p.m. AST. The object of a Casket Match is for a WWE Superstar to trap their opponent inside the casket and close the lid.
The Greatest Royal Rumble will stream live on WWE Network on Friday, April 27, at 12 p.m. ET/9 a.m. PT, with a special, one-hour Greatest Royal Rumble Kickoff starting at 11 a.m. ET/8 a.m. PT. It will also be available on pay-per-view outside of the Middle East with regional broadcast information forthcoming.
I would assume Undertaker will go over, and that'll lead to talk of Rusev being buried (quite literally, in this case!), but it's a Network event being held overseas. Basically just a match for the international market, giving them an opportunity to see a legend in action, and have a heel be defeated in a gimmick match (though it's questionable as to whether Rusev really is a heel right now). If this were an extended program on TV or one of the regularly scheduled events, then I'd suggest it'd be problematic in terms of making Rusev look strong, but as a once off? Just fanservice for a market they don't visit all that much.
Also, guess Taker is feeling pretty healthy if he's willing to work a few more dates here and there.