Sanil Gupta's 98 inspired his Trinity to an 80-run win against UCD in the first Blues match between the side in seven years.
Skipper Gupta hit 11 fours and two sixes as he and Irish Under 19 international David Vincent (44) shared an opening stand of 129 in 20 overs.
While he may have fell two runs short of a deserved century, Gupta's 98 was the highest individual score for Trinity against their old foes in 101 years.
The UCD side contained Ireland Women internationals Gaby Lewis and Orla Prendergast, with the latter conceding just five runs in an excellent four-overs opening spell.
Merrion spinner Peter Forkin (4-47) was the most successful bowler, while Gavin Hoey's breezy 21 ensuring the hosts got over 200, finishing their 40 overs on 227 for 8.
The UCD chase never really got going at any juncture, with Theo Dempsey striking twice early on.
There was also two wickets for Milo Egan (2-23), but it was the left-arm spin of Irish Under 19 international Matthew Humphreys (3-15) that really put the brakes on.
Stephen Black hit three sixes in his unbeaten 62, but Gaby Lewis (14) was the only other batter to reach double figures as they were dismissed for 147 in the 38th over.
At College Park, Trinity beat UCD by 80 runs
Trinity 227/8 (40 overs; Sanil Gupta 98, David Vincent 44, Gavin Hoey 21; Peter Forkin 4-47)
UCD 147 (38 overs; Stephen Black 62*, Gaby Lewis 14; Matthew Humphreys 3-15, Theo Dempsey 2-17, Milo Egan 2-23)