There was an element of experimentation in both sides for this friendly as Northampton built a 9-0 lead on the back of three Stephen Myler penalties in the 11th, 24th and 34th minutes.
Paul Diggin’s intercept try, converted by Ryan Lamb, prompted something of a response, as a textbook Leinster lineout and maul ended with a try for Jason Harris-Wright. Mat Berquist added the conversion.
Lamb nailed an 80th minute penalty ahead of Carr’s late surge.
Scorers for Leinster: F Carr, J Harris-Wright try each; M Berquist 2 cons.
Scorers for Northampton: P Diggin try; S Myler 3 pens; R Lamb pen, con.
LEINSTER: A Conway; F Carr, B Macken, E Sheridan, L Fitzgerald; I Madigan, I Boss; H van der Merwe, S Cronin, J Hagan, D Browne, S Sykes, K McLaughlin, D Ryan, R Ruddock (capt).
Replacements: D Toner for Sykes 28; S Jennings for McLaughlin 41; D Kearney for Fitzgerald 50; M Berquist for Madigan, M Flanagan for D Browne for A Dundon for Cronin all 52; J Cooney for Boss 58; L Auva’a for Ryan 60; D Hudson for Sheridan 61; I Madigan for Conway 66; J Harris-Wright for Dundon 73; C Willis for Madigan 66.
NORTHAMPTON SAINTS: G Tonks; P Diggin, T May, J Downey, N Cato; S Myler, L Dickson; P Doran-Jones, B Sharman, B Mujati, J Craig, M Sorenson, C Clark (capt), B Nutley, A Eustace.
Replacements: M Roberts for Dickson 31; M Hopley for Eustace 41; R Lamb for Myler, T Mercey for Doran-Jones, A Waller for Mujati all 54; M Haywood for Sharman 56; T Hicks for Sorenson, S Armstrong for Downey, S Farmer for Clark all 60; C Sadler for Cato 67.
Referee: G Clancy, IRFU.
ULSTER got the perfect boost for the start of next week’s Pro12 League with deserved victory over Premiership side Harlequins at Ravenhill.
Brian McLaughlin’s side led 10-5 at the break, with Craig Gilroy scoring the opening try and influential fly-half Ian Humphreys landing the conversion and a penalty.
Harlequins just could not break the tough Ulster defence, with their only points coming from a Karl Dickson try in the 38th minute.
Lively Ulster scrum-half Paul Marshall grabbed Ulster’s second try in the 43rd minute, with flanker Willie Faloon closing out the game late on.
Scorers for Ulster: Tries: Gilroy, Marshall, Faloon; Con: Humphreys 2; Pens: Humphreys
Scorers for Harlequins: Try: Dickson
ULSTER: A D’Arcy; C Gaston (Nelson 71); D Cave (L Marshall 77)N Spence (Whitten 50), C Gilroy; I Humphreys (Jackson 61), P Marshall (Porter 70); P McAllister (Black 54), A Kyriacou, J Cronin (Macklin 79), L Stevenson (Barker 50), N McComb (Tuohy, 61), P Wannenburg (Diack 70), W Faloon, C Henry.
HARLEQUINS: M Brown (Smith 67); R Chisholm, G Lowe, J Turner-Hall (Urdapilleta 71), U Monye (Walker 70); N Evans (Clegg 57), K Dickson (Bolt 64); J Marler (Lambert 64), J Gray (Brooker 40), J Johnston (Fairbrother 56), O Kohn (Mathews 64), G Robson (Browne 53), C Robshaw, W Skinner (Wallace 67), T Guest (York 40).
Referee: Leo Colgan (IRFU).