Yordano Ventura is going back to the minors to try to regain his form from his strong rookie season. The Royals optioned Ventura to Triple-A Omaha on Tuesday after a string of ineffective outings for the opening-day pitcher. “A lot of times it’s good for players to take a step back, so they can take three or four steps forward,” manager Ned Yost said. The 24-year-old Ventura, who can run his fastball into triple digits, is 4-7 with a 5.19 ERA in 14 starts this year. He spent nearly a month on the disabled list with inflammation of his ulnar nerve.