[2] He was briefly apprentice with Kevin Prendergast which caused him to downscale his riding ambitions, since without the backing of a major trainer, the life of a jockey was tough.
[4] Notable victories came in big handicaps on Prendergast's Ulfah, Noel Meade's Sugarhoneybaby and Green Lassy for Ger Lyons.
At that point, although a decade into his career, he had not succeeded in making a major impact, and there seemed to be limited prospects of a successful return to the sport.
O'Brien encouraged him to work hard, promising he would be repaid for his efforts, and began to give him rides in big races as a result.
[5] Mainly he was regarded as a "journeyman jockey",[4] although in April 2017, he secured his biggest winner to that point by winning a Group 3 at Leopardstown on Hydrangea.
[4] Shortly after that success, Beggy was given an eight-day ban for interference when riding O'Brien's pacemaker Taj Mahal in the Eclipse at Sandown.
[6] In the 2019 Epsom Derby, Beggy rode the Ballydoyle pacemaker Sovereign, who, having made the running until the straight, finished in tenth place.
He maintained his lead going into the straight and stayed on strongly under hands and heels in the final furlong to win by six lengths from Epsom Derby winner Anthony Van Dyck.