[1] Wycherley made his senior competitive debut for Munster in their 2020–21 Pro14 round 3 fixture against Welsh side Cardiff Blues on 26 October 2020, coming on as a replacement for James Cronin in the 69th minute in the provinces 38–27 win.
[4] He made his first start for Munster in their 28–16 win against Dragons on 1 November 2020,[5] and Wycherley made his Champions Cup debut for the province in their opening fixture of the 2020–21 competition against English side Harlequins on 13 December 2020, coming on as a replacement in Munster's 21–7 home win.
[8][9] He joined the senior squad on a two-year contract from the 2021–22 season,[10] and scored his first try for the province in their 34–17 away win against Italian side Zebre Parma in round 11 of the 2021–22 United Rugby Championship on 29 January 2022.
[14] Selected in the Ireland under-20s squad for the 2019 Six Nations Under 20s Championship,[15] Wycherley started the wins against England,[16] Scotland,[17] Italy,[18] France, against whom Wycherley scored two tries and won the Man-of-the-Match award,[19] and Wales, as Ireland secured their first grand slam in the tournament since 2007.
[21] Wycherley was selected in the Emerging Ireland squad that travelled to South Africa to participate in the Toyota Challenge against Currie Cup teams Free State Cheetahs, Griquas and Pumas in September–October 2022.