The National Federation of Professional Bullriders will host the Jeff and Randy Walkowe Memorial Bull Riding event Saturday, Sept. 5, at the Tri-County Fairgrounds in Mountain Grove. Gates open at 5:30 p.m., with free children’s activities from 6 to 8 p.m. and bull riding beginning at 8 p.m.MOUNTAIN GROVE, Mo. — The National Federation of Professional Bullriders will present the Jeff and Randy Walkowe Memorial Bull Riding event Saturday, Sept. 5, at the Tri-County Fairgrounds in Mountain Grove. AdvertisementThe two-hour program is scheduled to continue until 10 p.m. and will honor the memory of Jeff and Randy Walkowe while bringing National Federation of Professional Bullriders competition to the Mountain Grove community. Books will open at 6 p.m. for National Federation of Professional Bullriders members and at 8 p.m. for nonmembers.