**Since the Guinness PRO14’s inaugural campaign in 2001/02, 12 of the 19 titles have been won by one of the four Irish provinces.** Leinster lead the way with seven, Munster have won three crowns and both Connacht and Ulster have also reigned supreme along the way. This season, the Irish sides are proving particularly dominant. Between them, they occupy the top two spots in each Conference and Leinster, Munster and Ulster are all yet to lose this season. It all whets the appetite for the always fiercely contested festive derbies, which this year could go a long way to deciding how the final tables look.