Career
He played his club football with Round Towers, winning the county title with them three times. Kildare
He managed the Kildare Under 21 team to a Leinster Under-21 Football Championship in 2008 and went on to the All-Ireland Under 21 Football Championship final only to lose out to Kerry on the day. Longford
In 2009 he took over the Longford senior football team
In his first year Longford were knocked out in the first round of the Leinster Senior Football Championship by Wicklow.
They then went into the Qualifiers where they beat Leitrim 0–13 to 0–10 before they ran Kerry close in Round 2 going down 1–12 to 0–11. Rayn"s second year in charge once again seen his side go out in the first round in Leinster losing out to Louth, they once again entered the Qualifiers, in round 1 they pulled off the shock of the championship when they beat Mayo 1–12 to 0–14, in Round 2 Down proved too good and ran out 1–14 to 1–10 winners.
2011 started out well for Rayn and Longford when they beat Roscommon by 2–11 to 1–08 to take the National League Division 4 title. In August 2013, he called it a day.
