In 1954, the Leinster Council established a new inter-county football and hurling tournament in an effort to raise funds to supplement the medical bills of players who were in financial difficulty. This scheme, known as the Players' Injury Fund, was the first of its kind to be offered by a provincial GAA council. The Walsh Cup was dominated by Kilkenny, Wexford and Dublin during the fifties and sixties, but was not contested for much of the seventies. This resulted in Kilkenny and Wexford being moved to the newly formed Kehoe Cup. In their absence,
Offaly went on to win the Walsh Cup for the first time, beating Dublin in the final by a scoreline of 7–7 to 1–7. The Walsh Cup was not contested over the next two years and in 1978, Dublin moved to the Kehoe Cup. When the Walsh Cup resumed in 1980, Kilkenny, Wexford and Dublin all remained in the Kehoe Cup, allowing teams such as
Laois and
Westmeath to win the Walsh Cup in 1980 and 1982 respectively. There was a break in the competition again between 1983 and 1986. That same year, the
Down hurlers made history by becoming the first non-Leinster team to enter the competition. In 2004,
UCD entered the first college team in the Walsh Cup and even went on to win the tournament. In the final in
Nowlan Park, the Students beat the reigning All-Ireland champions, Kilkenny, by 2–16 to 0–5.
Antrim followed suit of Down when they joined the competition in 2005 and made history three years later by becoming the first team from Ulster to win the tournament. They lifted the Walsh Cup in front of a home crowd in
Casement Park after defeating Offaly by 3–9 to 2–7. That year also saw the introduction of a knock-out competition between the losing teams from the first round, which became known as the Walsh Cup Shield. The purpose of the shield was to give the losing teams more than one competitive game in preparation for the upcoming season. In 2009,
Galway became the first team from Connacht to enter the Walsh Cup, which came about as part of their move from the
Connacht Championship to the Leinster Championship in a bid to play more competitive provincial hurling. Along with the county hurlers, Galway colleges
GMIT and
NUIG entered the Walsh cup, as well as Dublin college
DIT. The following year, Galway won the Walsh Cup for the first time, beating Dublin in the final by 1–22 to 1–15. In December 2011, the Leinster Council announced a three-year sponsorship deal with Bord na Móna, providing the competition with a title sponsor for the first time in its history. The new partnership, which also sponsored the Kehoe Cup and O'Byrne Cup, became known as The Bord na Móna Leinster GAA Series. In 2015, the format of the Walsh Cup changed to include a round-robin group stage in addition to the knockout stages. This meant that every team entered the tournament at the same stage and was guaranteed multiple competitive games. As a result, the Walsh Cup Shield was discontinued. The introduction of the group stages meant that more than 12 teams could now compete in the Walsh Cup. In 2017, a record 16 teams entered the tournament, with the addition of
Kildare. In
2018, college teams were excluded from the tournament, with only county teams competing. The structure of the tournament was changed again in
2019, with four teams competing in a group stage while three teams received byes to the semi-final phase. From
2022 onward, the tournament has been made up of two groups, with the group winners meeting in the final. ==Eligibility==