Armstrong's début game for Saints came against
Warrington in the first round of
Super League XIV. Standing in for
New Zealand international
Francis Meli, he scored a try in a 26-14 win. He went on from this to play against
Huddersfield in the next round,
Hull Kingston Rovers and a try scoring performance in a 4-0 win over
Crusaders (he was the only player to score in this game) After a period in the reserves, he came back to play in the win over
Harlequins RL where he scored a try in a 44-24 victory. It took Armstrong 13 rounds to break back into the first-team. At the
Magic Weekend, held at
Murrayfield, he scored a try from left centre in a 54-0 win over
Hull Kingston Rovers, in his first game of the season. Armstrong was dual registered with
Leigh for 2011's
Super League XVI. Armstrong scored the winning try in Leigh's 20-16 win over
Halifax in the 2011
Northern Rail Cup Final. Armstrong was released from his contract with St. Helens and has decided to join
Swinton ahead of the 2012 season. Armstrong was forced to retire from the professional game in 2018 due to
osteoarthritis. In 2024, he joined
Fylde RFC as a player-coach. == References ==