BRILLIANT young rider Frankie Dettori is double-booked for the $4 million International Bowl following the inclusion yesterday of English challenger, Marina Park. And American hopeful Now Listen becomes the latest withdrawal from the 1,400-metre event, being replaced by Fourstar Dave. Dettori has been put down as the rider for Marina Park, who officially got a run on Tuesday when Karinga Bay came out, and the Malayan Racing Association (MRA) challenger, Giltedged III. Dettori is already riding the prime MRA Cup hope Navajo II for Malcolm Thwaites but Charles Read, trainer of Giltedged II, has nominated the Italian-born star for the ride. Director of Racing, Philip Johnston, said: ''We don't know where Dettori is at the moment but he has been put down for both horses so he is going to have to decide. ''I don't think there is much of a problem about it. There will be no lack of other good riders around for whichever one he turns down.'' Fourstar Dave will be ridden by Italian-American Richard Migliore and is raced in the same interests as Fourstar Allstars who won the Irish 2,000 Guineas three years ago. And top British rider John Reid arrived yesterday from Japan where he rode White Muzzle in Sunday's Japan Cup. Reid partners Swing Low in the Bowl and wouldn't mind a bit of rain on the big day at Sha Tin. ''He's a good sort but would be that bit better with some ease in the ground. And he is really at his best over longer than seven furlongs. We'll certainly need every inch of the distance,'' said the Ulster-born rider who had a first-class season in theUK riding over 100 winners. Reid, who can accept rides in other races on the December 12 card, expects to be at Sha Tin on a couple of mornings. ''It's just to keep in shape. It would be nice to get one or two other rides on the day if that is possible,'' Reid said. Kiwi Golfer was the big mover in Ladbrokes ante-post International Cup betting yesterday. The New Zealand challenger was originally put in at 20-1 but was cut to 12-1 during brisk early betting on the December 12 showpiece.