As reported by the Daily Racing Form this afternoon, Dullahan (3rd place finisher in the Kentucky Derby) and Trinniberg will not race in the Preakness at Pimlico on May 19th. In their absence, Teeth of the Dog and Zetterholm will now point towards the race. Initially, Teeth of the Dog and Zetterholm were planning on running in Saturday's Peter Pan Stakes at Belmont Park.
From that same DRF report, Michael Maker is leaning against running Hansen in the Preakness.
The Trinniberg defection is more a pace impact than anything else; it's highly unlikely that he had any real shot of winning the Preakness. The Dullahan defections, however, removed one of the best closers from the field. Dullahan's owner Jerry Crawford explained the decision to the DRF:
"Dale Romans loves the way Dullahan came out of the Kentucky Derby and believes we could win the Preakness," Crawford said. "But we believe we have a 3-year-old ‘Horse of the Year’ candidate and that his future is best served by not asking him to race for the third time in just five weeks in the Preakness."