He scored a try on his first grade début against St. George Illawarra in 2005 as the club won the Minor Premiership that year.

[4] After limited opportunities at the Parramatta, Delaney joined the newly formed club the Gold Coast Titans for the 2007 NRL season.

He watched from the stands as the Gold Coast crashed out of the play-offs, 27–2 to eventual finalists, & former club, Parramatta.

Delaney made his unofficial début for Leeds in Matt Diskin's Testimonial Game at Headingley against the Bradford Bulls.

However a reoccurrence of the injury necessitating further surgery in a pre-season friendly against Halifax prompted Delaney to announce an end to his playing career in February 2019.

[citation needed] After retiring from playing in early 2019, Delaney began coaching in the Leeds Rhinos youth system.

[26][27] Delaney joined the coaching staff at York City Knights in the Championship for the 2022 season, working as an assistant to James Ford.

[29] He had previously agreed to join from the upcoming 2023 season under Willie Peters, but made the move early following the interim appointment of Danny McGuire.

[30][31] In April 2023, Delaney signed a two-year contract extension with Hull KR alongside fellow coach David Hodgson.

[32] During Delaney's time at Hull KR, the team's defensive record improved from 22.52 points conceded per game in 2022, to 12.07 in 2024.