Rumor Roundup (July 17, 2015): Undertaker return, Sting match, Jack Swagger, NXT call ups, more!

Speculating on the rumors surrounding pro wrestling is a favored pastime of many fans, perhaps second only to actually watching the matches. In this daily column, we take a look at the latest rumors being churned out by the pro wrestling rumor mill.

Important reminder: Rumors are just that -- rumors. None of this has been confirmed as legitimate news or fact, it's just circulating around the pro wrestling rumor mill. Remember, take it all with a grain of salt.

Rumors for the Day:

• Undertaker will be on Monday Night Raw next week to build to his SummerSlam match and it's likely against Brock Lesnar.

• According to the Observer, WWE had an opponent in mind for Sting at SummerSlam but an injury changed that. No word on who it was or who his new opponent may be.

• Jack Swagger deleted his Twitter recently, furthering speculation that he's finishing up with WWE soon.

• According to the latest Wrestling Observer Newsletter, WWE threw around the idea of having the NXT women come up and completely supplant the WWE Divas division save for a few key names who could keep up, like Paige, and those who would need to be kept around for Total Divas.

• For that matter, while there is still fear that this will crash and burn Triple H and Stephanie McMahon are both behind the new outlook and we can expect them to at least push it without giving up on it for a while.

If you have heard of any interesting rumors that you'd like to add, feel free to post them in the comments section below. Just remember they are rumors and not confirmed as fact, so please take them as such. Have fun with it.