Eight seconds

You’ll be hanging onto your seat as Chris Shivers of Jonesville, the first bull-rider to earn $1 million in a year (and later $3 million), returns to the River Center Arena Friday and Saturday for the Chris Shivers/Gerry Lane Invitational. Some 80 of the world’s best bull-riders are competing for $25,000. Performances both nights are at 8 p.m. Tickets are $4.50 to $60 via ticketmaster.com.