MANKATO — Pro wrestling returns to Mankato this weekend for a good cause. “Mankato Mayhem 2” is set for Saturday night at The Venue, with all proceeds benefiting Bravo Zulu House, a veteran-only sober house that is working to build a second location in Mankato.The event is hosted by the North Mankato American Legion. Last year’s event sold out, prompting organizers to move to the larger Venue this year. Doors open at 5 p.m. Saturday. Tickets are $20 in advance and $25 at the door. Advance tickets are available online and at the North Mankato American Legion.