Ronald Eugene "Trey" Ball III (born June 27, 1994) is an American former professional baseball pitcher.
The Boston Red Sox selected him in the first round of the 2013 Major League Baseball draft.
Listed at 6 feet 5 inches (1.96 m) and 185 pounds (84 kg), he throws and bats left-handed.
[4][5] He signed with the Red Sox, receiving a $2.75 million signing bonus,[6] and spent 2013 with the Gulf Coast Red Sox of the rookie-level Gulf Coast League, where he had an 0–1 win–loss record with a 6.43 ERA in seven innings pitched.
In 2014, he played for the Greenville Drive of the Single–A South Atlantic League where he pitched to a 5–10 record and 4.68 ERA in 22 starts, and in 2015, he pitched for the Salem Red Sox of the High–A Carolina League, where he compiled a 9–13 record, 4.73 ERA, and 1.46 WHIP in 25 starts.