Silent Witness and Bullish Luck came through a rousing gallop in Tokyo yesterday morning and their preparation for Sunday's Group One Yasuda Kinen is right on schedule. Trainer Tony Cruz reported that the stablemates worked a strong 1,200 metres, coming home the last 800m in approximately 50 seconds and the last 400m in 'close to 23'. 'I spoke with [senior trackwork rider] Patrick Tse and he said they both worked beautifully,' Cruz said. 'Patrick always rides Bullish Luck and it was important that he does so because he's a vigourous rider and Bullish Luck needs someone to keep his mind on the job.' Cruz said the international assault on Japan's number one mile race was going perfectly to plan. 'They'll gallop again on Thursday morning, just as they do when they're at home,' he said.Cruz, meanwhile, had a frustrating day at the office at Sha Tin yesterday, with his 10 horse team providing three seconds, a third and a fourth with Super Combed in the day's feature the Group One Champions & Chater Cup. There was some real promise, from a future viewpoint, in the performance of River Esperanto, who was having only his second local start and his first since December when runner-up to Green Treasure in the Hong Kong Jockey Club Community Trophy (1,800m). The four minor placegetters meant Cruz did not advance his pursuit of George Moore's record number of winners for a season. Cruz remains on 82 winners, and must prepare five more to equal, and six to break Moore's 'unbreakable' benchmark with eight meetings remaining.