Leinster Lightning's unbeaten record in the Interprovincial Championship is under serious pressure following the first day of their three-day game with the North West Warriors in Clontarf.

The two-time defending champions were bowled out for 101 and were two without loss following on at stumps, still trailing by 157 runs after the visitors posted 260, their highest score in the three-year history of the competition.

South African pro Marco Marais top-scored in hitting 66, while Ireland World Cup players Andy McBrine (42) and Stuart Thompson (41) made contributions which grew in importance as the day wore on.

Thompson also impressed with the ball, taking three for 24, while fellow seamers Craig Young (three for 29) and Graeme McCarter (two for 20) also got in on the act with John Anderson (37) and Max Sorensen (25 not out) the only real resistance.