He made his senior debut in the game, replacing Jason Knight in the 87th minute of a 2–1 loss at a sold out Aviva Stadium.
He returned to the U21 side for their game 2 days later against San Marino U21 and scored his first goal at U21 level in a 3–0 win at Turners Cross.
2003
Sinclair Ntomuchukwu Armstrong (born 22 June 2003) is an Irish professional footballer who plays as a forward for EFL Championship club Queens Park Rangers and the Republic of Ireland national team.
2018
Initially starting his career with Cherry Orchard, Armstrong went onto sign for Shamrock Rovers, featuring for their underage sides before making his senior debut, aged 15, in August 2018 in a 1–0 loss to Drogheda United in the FAI Cup.
2020
He made 6 appearances for the club's reserve side Shamrock Rovers II in the League of Ireland First Division in 2020.
In late 2020, he made the move to Championship side Queens Park Rangers, following a successful trial period with the club.
On 18 October 2021, he earned his first loan move, joining National League club Torquay United until January 2022.
Just five days later, he went onto score on his debut, netting the opener in their 2–0 home victory over King's Lynn Town.
Armstrong went onto feature eight more times for The Gulls, adding another to his tally against Weymouth in December before returning to West London.
In April 2022, he returned to the National League, this time joining Aldershot Town on loan for the remainder of the campaign.
On 26 April 2022, Armstrong made his debut against Bromley, before days later scoring his first goal for the club during a 3–1 home victory over Notts County.
After an impactful pre-season ahead of the 2022–23 campaign, Armstrong was named in Queens Park Rangers' matchday squad for their first game of the season against Blackburn Rovers, in which he made his eventful debut featuring for the final 13 minutes in the 1–0 defeat.
Born in Ireland, Armstrong is of Nigerian descent.
He has been capped for under-17 and under-19 youth level for the Republic of Ireland.
On 8 September 2023, he received his first call up to the senior Republic of Ireland squad for their UEFA Euro 2024 qualifier at home to Netherlands 2 days later.
