LOUISVILLE, Ky. - Comma to the Top, who chased the pace before finishing last in Saturday&rsquo;s Kentucky Derby at Churchill Downs, suffered an injured ankle, his trainer Peter Miller said.\r\n&quot;It appears my horse chipped his left ankle,&quot; Miller told Churchill Downs officials. &quot;We could see it when we brought him back. I believe we&rsquo;ll have Dr. [Wayne] McIlwrath from Colorado State University take it out in the next little while.&quot;\r\nMiller said that Comma to the Top would be out of training for at least 60 days following that surgery.\r\nIn Saturday&rsquo;s Kentucky Derby, Comma to the Top, under Pat Valenzuela stalked the pace until for a mile before fading.\r\n&quot;This isn&rsquo;t the end of the world, and hopefully it won&rsquo;t be too bad,&quot; Miller said. &quot;My horse tried; he always tries and for the first mile of the race he was right there. In the end it looks like we do have a real good miler or mile and a sixteenth horse. We got to run in the Kentucky Derby. How special is that?&quot;\r\nComma to the Top, a son of Bwana Charlie, won 6 of 13 starts entering the Kentucky Derby. From last October through December, he reeled off five consecutive victories including a win in the Grade 1 Cashcall Futurity at Hollywood Park. He was winless in three starts this year, but was only beaten a head by Midnight Interlude in the Santa Anita Derby.\r\nComma to the Top was one of two horses to get injured in the Derby. Archarcharch suffered a condylar fracture to his left foreleg.