LEXINGTON, Ky. - In Summation, a Grade 1-winning millionaire, will enter stud at Ocala Stud in Ocala, Fla., the farm announced Thursday. He will stand for $4,000 in 2010. In Summation, who retired in October, won 11 stakes, including the 2007 Bing Crosby Handicap. He also set a track records at Santa Anita for 5 1/2 furlongs in 1:01.27 and six furlongs in 1:06.67 and at Del Mar for six furlongs in 1:11.06. He also set a turf course record at Monmouth for 5 1/2 furlongs in 1:01.85. A 7-year-old Put It Back horse, In Summation campaigned for five years and earned $1,226,166 from a record of 12 wins, 6 seconds, and 1 third from 29 lifetime starts. In Summation is out of the Dayjur winner Fiesta Baby. He is a half-brother to stakes-winner Dakota Duke.