5-star challenge Frisco Chamber of Commerce will host the Frisco 5-Star Corporate Challenge for the second year on May 6 at Toyota Stadium.[/caption] For the second year, Frisco Chamber of Commerce will host its 5-Star Corporate Challenge at Dr. Pink Field in Toyota Stadium. The 5-Star Corporate Challenge is an all day event that takes place May 6 and pits local businesses against each other in friendly competition while promoting team-building, networking and corporate wellness. Team events include quarterback drills, a field day relay, a bike relay, a lip sync battle and a basketball shootout. The last day to sign up to sponsor the event is April 20 and last day to register for the event is April 22. A portion of registration fees will benefit the Collin College Foundation and the Frisco Education Foundation. For more information, go to www.friscochamber.com.