[5][6] McGuirk attended UK Qualifying School (Q-School) in 2021, where he achieved a nine-dart finish but missed out on a PDC Tour Card by one point.

[7][8] McGuirk won his first WDF title after beating Andy Baetens 5–4 in the final of the 2022 FCD Anniversary Open.

At PC22, he whitewashed Owen Roelofs 6–0 and won 6–2 against Vincent van der Voort, but was defeated by Mike De Decker, who averaged 101.42, 6–3 in the last 32.

At the 2024 WDF World Darts Championship, McGuirk entered the competition in the first round, where he defeated Mark Barilli 2–0.

[16] With 3–0, 4–0 and 5–0 wins over Brandon Weening, Peter Machin and François Schweyen respectively, McGuirk reached the final without losing a set.