In another demo of Sri Lanka's batting quality, opener Lahiru Thirimanne and Kumar Sangakkara smashed unbeaten centuries as the Sri Lanka cruised to 310 against a listless English attack.
Morgan thought their score of 309 for 6 was 25 runs better than "par", built around Joe Root's 121 off 108 deliveries. leaving some late fireworks from Root and Jos Buttler's undefeated 39 off 27 deliveires to lift them past 300.
Thirimanne went on to score a crucial 137 off 143 balls, putting on 210 for the 2nd wicket partnership with the sublime Sangakkara 117 just 86 balls.
ISangakkara's 23rd century and his second in two matches after an unbeaten 105 against Bangladesh in Melbourne on Thursday, which accompanied Tillakaratne Dilshan's 161 not out.