THIS WEEK AT GOLDEN GATE FIELDS

Schedule: Thursday through Sunday Post time: 12:45 p.m. Feature race: $75,000 Gold Rush Stakes on Saturday Feature simulcast race: Grade 1, $300,000 Matriarch Stakes on Sunday at Del Mar

Update: Tivan, who rallied late to win his debut and the Golden Nugget Stakes sprinting, drew the No. 6 post position for the 1-mile Gold Rush Stakes. From the rail out, his eight opponents are Mad Luther, Sueno, Spin Lightning, Rally Cat, The Creep, Mayor Cobb, Rey Coliman and Gobsmack. Santa Anitabased Spin Lightning won his debut, then finished a distant fifth in the Grade 1 Del Mar Futurity and the Zuma Beach Stakes. Mad Luther, who finished sixth in the Golden Nugget Stakes, joins The Creep and Major Cobb as the only entrants to have won going 1 mile. Rey Coliman finished second in his only 1-mile try. … Jockey Pedro Terrero can return Sunday after serving a seven-day suspension for interference on Shadrack in the fourth race Nov. 11. … Alejandro Gomez begins a three-day suspension Saturday for interference on War Union in the sixth race Nov. 23. Elsewhere: Vasilika will face her toughest competition when she goes for her ninth straight win in the Matriarch Stakes. Even though Vasilika won a Grade 1 and two Grade 2 events in her past three starts, those fields didn’t include prominent East Coast and Midwest invaders that are expected to be entered Thursday for the 1-mile grass race for fillies and mares. Trainer Chad Brown is sending graded-stakes winners Quidura, Rymska and Uni from New York, and Dona Bruja, Daddy Is a Legend, Mission Impassable and Valdorna are expected from the Midwest. Owner-trainer Jerry Hollendorfer claimed Vasilika for $40,000 out of a victory Feb. 11, and she has earned $591,528 since then. … Hollendorfer won both Grade 3 stakes Sunday at Del Mar as Battle of Midway took the $92,000 Native Diver by a neck over Dabster and Flying Scotsman dominated the $100,000 Cecil B. DeMille by 4¼ lengths. … Santa Anita officials announced Monday that Frank Mirahmadi is replacing Michael Wrona as track announcer beginning Dec. 26. Wrona, the longtime announcer at Golden Gate Fields, won an audition over Mirahmadi for the Santa Anita job in 2016. … This week’s richest race is the Grade 1, $750,000 Cigar Mile on Saturday at Aqueduct, with Mendelssohn shipping back from Ireland for his sixth U.S. start of 2018. He finished fifth in the Breeders’ Cup Classic. — Larry Stumes, Special to The Chronicle