Fusaichi Samurai, a record-priced $4.5 million son of Kentucky Derby (gr. I) winner Fusaichi Pegasus , was an impressive two-length winner in his debut Saturday at Hollywood Park.The 2-year-old Fusaichi Samurai races for the same owner, Fusao Sekiguchi, and trainer, Neil Drysdale, as his sire did. Victor Espinoza guided the handsome Kentucky-bred dark bay colt to victory in a time of 1:15 2/5 for the 6 1/2 furlongs. Four horses in the field of six were making their career debuts. Espinoza also rode Fusaichi Pegasus in his first start, a second-place finish at Hollywood Park five years ago to the day. "This horse is unbelievable," said Espinoza.Drysdale said he has no immediate plans for Fusaichi Samurai.Fusaichi Samurai showed good speed after breaking third in the six-horse field. After getting the lead and completing the opening quarter mile in :22 2/5, he battled Mysto's through a half in :44 3/5. He inched away coming out of the turn and after being briefly ridden in mid-stretch, Fusaichi Samuri finished under a snug hold with Mysto's second and Valdini third.Eagle Holdings bred the colt, who was produced by Hidden Storm (Storm Cat). Fusaichi Samurai became the most expensive juvenile ever purchased at public auction in February when taken by Sekiguchi at the Fasig-Tipton's selected 2-year-olds in training sale.