[7][8] Kenny-Dowall played in the 2006 NSW Cup grand final for Newtown who were the Sydney Roosters feeder club at the time against Parramatta.

Instead, Kenny-Dowall played for the New Zealand Māori which met the Indigenous Dreamtime team in a curtain-raiser to the World Cup, scoring a try in the 34–26 loss.

Kenny-Dowall combined with Benji Marshall, Jason Nightingale and Nathan Fien to set up the series winning 79th minute try.

[18] Kenny-Dowall's form throughout 2010 saw him runner up to Marshall in the Rugby League World Golden Boot Award, where he made centre in the team of the year.

[21] Kenny-Dowall played for the New Zealand Kiwis at centre in the 2011 Anzac Test at Cbus Super Stadium against Australia in the 20–10 defeat.

[22] In round 19, against the South Sydney Rabbitohs, Kenny-Dowall played his 100th NRL career match for the Roosters, scoring a try in the 21–20 loss at ANZ Stadium.

[32] In round 8, against the St George Illawarra Dragons, Kenny-Dowall scored his 100th NRL career try in the Roosters 14–12 loss at the Sydney Football Stadium.

[39][40] In the preliminary final match, against the Brisbane Broncos, Kenny-Dowall made headlines after making one of the biggest blunders of the season when he attempted throw a pass from the wing to fullback Roger Tuivasa-Sheck under pressure.

[43] Kenny-Dowall played in all three test matches against England on the wing and scored a try in the Kiwis 2-1 Baskerville Shield series loss.

[46] In round 4, against the Manly-Warringah Sea Eagles, Kenny-Dowall played his 200th NRL career match and scored 2 tries in the Roosters 22–20 loss at the Sydney Football Stadium.

[47][48] On 1 May 2016, Kenny-Dowall was named in the New Zealand Kiwis 19-man squad for the 2016 ANZAC Test but was later ruled out of the match due to a foot injury.

[53][54] On 27 June, after escaping conviction for the charges, it was announced that he was able to join the Newcastle Knights effective immediately on a contract until the end of 2019.

[61] In round 9 of the 2018 season, Kenny-Dowall scored 2 tries in the Knights' 12–34 loss to the South Sydney Rabbitohs, at McDonald Jones Stadium.

On Thursday 19 September, it was announced that he would be joining Super League side Hull Kingston Rovers on a 2-year contract starting from 2020.

Hull KR finished bottom of the table but avoided relegation due to the interrupted season which was caused by the COVID-19 pandemic.

[66] Kenny-Dowall played every game for Hull KR in the 2021 Super League season as the club reached the semi-final stage of the competition before losing 28-10 against the Catalans Dragons.

[70] On 7 March, Kenny-Dowall was given a four-game ban including a £750 fine for making unnecessary contact with an injured opponent during Hull Kingston Rovers loss against Leigh in round 3 of the 2023 Super League competition.

[72] On 12 August, Kenny-Dowall played for Hull Kingston Rovers in their 17-16 golden point extra-time loss to Leigh in the Challenge Cup final.

[77] On 29 February, magistrate Gregory Grogin found him not guilty on all 11 charges, taking into account lack of evidence, witness credibility issues, and his good character.