Ger Lyons and Colin Keane recorded a double as they book-ended Navan's eight-race card with winners.
Medicine Jack (6-4fav) was an authoritative winner of the opening Merryn Lacy E.B.F. Median Auction Maiden, pulling four and a quarter lengths clear of Magnification after taking it up from the pace-setting Miss Cogent.
Their second winner was less straightforward as Lustrous Light hard to pull out all the stops to justify 4-5 favouritism in the KL Construction Maiden, but eventually saw off Twilight payment by a neck.
Eddystone Rock showed smart turn of foot to land the Ryan & Co Accountants Handicap, the richest race of the day.
Johnny Murtagh's gelding broke his duck at the 15th attempt in a Wexford maiden earlier in the month and quickly followed up in impressive fashion.
Castle Guest led until a furlong out when Conor King's mount shot to the front and soon put the race to bed as the 11-4 favourite crossed the line six lengths ahead of Brosnan, who pipped Bold Lady Quill for second.
Barron's Lad sprang a 25-1 surprise in the REA Gunne Property Carrickmacross Maiden as he stayed on best down the outside to deny Aspar, who was sent off 5-2 favourite, by three-quarters of a length.
22 runners went to post for the Kiltale Juvenile Hurlers Handicap but Little Sweetheart (10-1) never saw another rival as she made all in style.
Bounced of out stall one by Danny Grant, Pat Flynn's five-year-old blazed a trail on the far side and Battleoftheboyne could only get within two and half lengths of her in second.
Pirolo (14-1) ran out a comfortable two-and-three-quarter-length winner from Buzz Off Barroso in division one of the Velstone Work Surface Handicap, while Ibsen (11-4) displayed a fine attitude to hold on by a head from Grey Sky Blue in the second instalment.
Jim Bolger got on the scoresheet when Ceol Na Nog (8-1) dominated his rivals in the Follow Us On Facebook Handicap, taking the 23-runner event from Full Court Press by three and a quarter lengths.
