Confirmed so far for the Preakness: Giacomo, Afleet Alex, Greeley's Galaxy, High Limit (from the Derby); Hal's Image, Scrappy T and Malibu Moonshine. Also expected to run: Galloping Grocer.
Other possible starters from the Derby: Wilko, Closing Argument.
This year, it's likely that all 14 post positions will be filled, which hasn't happened since 1992. The top seven starters are determined by graded earnings, the next four by earnings minus restricted races, and the final three spots in order of overall earnings.
It's not unusual for a few local horses to compete in the Preakness, and occasionally one of them hits the board.