"[4][5] In the fall of 1916, Dibut was signed by the Milwaukee Brewers of the minor league American Association.

[6] Later that winter, Dibut joined the Red Sox team in the professional Cuban League under manager Mike González.

[8] The next winter he pitched in the Cuban League for Habana, again under the management of González, and appeared in three games, again going 1–0.

[11] That winter, Dibut returned to the Cuban League and signed with the Leopardos de Santa Clara.

The team, which featured Negro league and Cuban stars Oscar Charleston, Alejandro Oms, Dobie Moore, and Oliver Marcelle, along with a pitching staff of Bill Holland, Dave Brown, Rube Currie, Merven Ryan, and José Méndez, in addition to Dibut, dominated the league with a 36–11 record and finished 11+1⁄2 games ahead of second place Habana.

[15] Dibut made his major league debut on May 1 against the Chicago Cubs, entering in the seventh with the Reds behind 8–1.

[21][22] He made his first major league start a week later against Boston and pitched a complete game, holding the Braves to two runs on four hits in an 8–2 victory for the Reds.

[23][24] Dibut finished the 1924 season with a 3–0 record in seven major league games—two complete game starts and five relief appearances.

[2] At the end of the season, he was offered a contract for the following year which stipulated that he was not allowed to play winter ball in Cuba.

[26] Dibut developed a sore arm in spring training in Orlando, but remained on the Reds' roster when the season started.

He proceeded to give up consecutive hits to Rogers Hornsby, Jim Bottomley, and Les Bell, allowing four more runs to score.