Racing’s first lady, who trains in partnership with Adrian Bott, led in three winners at Rosehill Gardens last Saturday — promising mare Sedanzer and impressive stayers Broadside and Imperial Aviator. The treble takes Waterhouse and Bott into third position on the Sydney trainers’ premiership with 23 wins for the season behind Chris Waller (67 wins) and James Cummings (35 wins). It is nearly a decade since Waterhouse last won the Sydney trainers’ title and it is unlikely she will ever be in a position to challenge the might of the Waller and Cummings stables as she simply doesn’t have the numbers in training at Tulloch Lodge these days. But Waterhouse is enjoying training more than ever, reiterating that forming the training partnership with Bott her given her a new lease of life, and this is reflected by the stable’s outstanding run of success in Sydney and Melbourne this season. Waterhouse and Bott are also in third position in the Melbourne trainers premiership with 15 wins from just 52 starters so far this season. Trainer Gai Waterhouse in the mounting yard at Rosehill Gardens on Saturday. Picture: Jenny EvansSource:News Corp Australia CHRISTMAS TEST FOR GAI’S STAYERS BROADSIDE and Imperial Aviator are likely to put their staying abilities to the test in the Christmas Cup (2400m) when racing returns to Royal Randwick on December 16. Gai Waterhouse has a long-term ambition to get former English stayer Imperial Aviator to the Melbourne Cup next year, a race she was hoping the more seasoned Broadside would have contested last month but the gelding wasn’t quite at his best in the build-up to the Flemington two-mile. But Broadside was dominant in the ATC Cup over the Rosehill 2000m, his first start in two months, and will be even better suited at 2400m in the Christmas Cup. Imperial Aviator did contest a French Derby during his three-year-old season, finishing down the track, and gave a demonstration of his staying talent winning over 2400m at just his third Australian start. Sedanzer won’t be set for the Villiers Stakes in two weeks as Waterhouse wants to take the mare through her grades, believing the Belle of the Turf Stakes at Gosford on December 28 is a