Club
Grace began his club hurling career at underage levels with Éire Óg. He won three minor championship medals with the club during a four-year spell between 1932 and 1935.
In 1936 Grace was just out of the minor grade when he joined the Éire Óg junior team. He won a championship medal in that grade that year following a 6-2 to 4-0 defeat of Moonrue.
Both sides resumed their rivalry in the intermediate decider the following year. A huge 8-4 to 1-2 victory gave Grace a championship medal in that grade.
By 1940 Grace had joined Carrickshock as the team were about to contest a third successive decider. A narrow 1-4 to 1-2 defeat of Mullinavat gave Grace a first championship medal in the senior grade.
Old rivals and Grace's former club Éire Óg provided the opposition in the 1941 county final, however, Carrickshock finally retained the title following a one-point 4-5 to 3-7 victory. It was Grace's second championship medal.
Carrickshock's great run of success continued in 1942 as the club qualified for a fifth successive final. Threecastles, who were appearing in their first decider in thirty-five years, were the opponents, however, a 3-2 to 2-3 victory gave Grace his third championship medal.
In 1943 Carrickshock set a remarkable record in Kilkenny hurling by winning a fourth successive championship. The 3-6 to 1-3 defeat of Mullinavat gave Grace a fourth championship medal.[3][4]
Grace added a county football championship medal to his collection in 1948 as St. Paul's defeated Conahy Sarsfields by 1-7 to 0-4 in a replay.
By 1950 Grace was playing with Dicksboro. He won a fifth hurling championship medal that year following a 4-6 to 1-5 defeat of Éire Óg in a replay.
Inter-county
In 1935 Grace was appointed captain of the Kilkenny minor team. He won a Leinster medal following a 7-9 to 1-1 trouncing of Laois. The subsequent All-Ireland decider on 1 September 1935 pitted Kilkenny against Tipperary. A narrow 4-2 to 3-3 victory gave Grace an All-Ireland Minor Hurling Championship medal.
Grace made his senior debut in a 1-3 to 5-4 National Hurling League group stage defeat by Limerick on 3 April 1938.
In 1939 Grace won his first Leinster medal following a 2-12 to 4-3 defeat of reigning All-Ireland champions Dublin. The subsequent All-Ireland final with Cork on 3 September 1939 is regarded as one of the most famous championship deciders of all-time. The game was an exciting one with an explosive finish, as a spectacular thunderstorm lit up proceedings. Willie Campbell landed a long-range free in the net for an equalizing goal for Cork and a draw looked likely. Terry Leahy doubled on a Paddy Phelan 70-yard free to secure the winning point for Kilkenny on the stroke of full-time. The 2-7 to 3-3 score line gave Kilkenny the victory and gave Grace a first All-Ireland medal.[5][6]
Grace won a second Leinster medal in 1940 following a 3-6 to 2-5 defeat of Dublin. The All-Ireland decider on 1 September 1940 brought Kilkenny and Limerick together for the last great game between the two outstanding teams of the decade. Early in the second-half Kilkenny took a four-point lead, however, once captain Mick Mackey was deployed at midfield he proceeded to dominate the game. Limerick hung on to win the game on a score line of 3-7 to 1-7.
In 1943 Grace collected his third Leinster medal following a 3-9 to 2-6 defeat of Dublin. Kilkenny were later defeated by Antrim in the All-Ireland semi-final in one of the greatest hurling shocks of all-time.
After surrendering their title the following year, Grace collected a fourth Leinster medal in 1945 following a 5-12 to 3-4 defeat of Dublin. On 2 September 1945 Kilkenny faced near neighbours and fierce rivals Tipperary in the All-Ireland decider. Tipp raced into a stunning lead and left Kilkenny trailing by 4-3 to 0-3 at half-time. Three goals by "the Cats" in the second period turned the tide, however, it wasn’t enough as Tipperary won by 5-6 to 3-6.
Kilkenny and Dublin renewed their provincial dominance once again in the 1946 decider. In a much closer game Kilkenny won by 3-8 to 1-12, giving Grace a fifth Leinster medal. The subsequent All-Ireland final on 1 September 1946 pitted Kilkenny against old rivals Cork for the first time since 1939. Two quick goals just before half-time, one from the stick of Christy Ring, put Cork in the driving seat. Five more goals followed in the second period as Cork were the 7-5 to 3-8 winners.
Grace collected a sixth and final Leinster medal in 1947 following a 7-10 to 3-6 defeat of Dublin once again. On 7 September 1947 Kilkenny faced Cork in a repeat of the previous year's decider. The game itself is often described as the greatest All-Ireland final of them all. Jim Langton and Terry Leahy spearheaded the Kilkenny attack, while Mossy O'Riordan and Joe Kelly scored goals for Cork that nearly won the game. In the end Kilkenny won by 0-14 to 2-7, thus avoiding the ignominy of becoming the first team to lose three-in-a-row. It was Grace's second All-Ireland medal.