Jon Matlack, a left-handed pitcher, began his Major League Baseball career with the New York Mets. Drafted as the fourth overall pick in the 1967 MLB Draft, Matlack spent several years honing his skills in the minor leagues before making his debut with the Mets in 1971. His rookie season in 1972 was impressive, earning him the National League Rookie of the Year award. Matlack's performance that year included a 15-10 win-loss record and a 2.32 ERA, establishing him as a reliable starter in the Mets' rotation.

Throughout his tenure with the Mets, Matlack was known for his control and poise on the mound. He was part of a formidable pitching staff that included Tom Seaver and Jerry Koosman, contributing to the Mets' reputation for strong pitching during the 1970s. In 1973, Matlack played a crucial role in helping the Mets reach the World Series. During the National League Championship Series against the Cincinnati Reds, he pitched a complete game shutout in Game 2, which was instrumental in the Mets' victory in the series. Although the Mets ultimately lost to the Oakland Athletics in the World Series, Matlack's performance was commendable, as he pitched effectively in two games.

Matlack's consistency on the mound earned him three consecutive All-Star selections from 1974 to 1976. In the 1975 All-Star Game, he was named the co-MVP alongside Bill Madlock, after pitching two scoreless innings and securing the win for the National League. His ability to deliver under pressure was evident throughout his career, and he was often relied upon in critical situations.

In December 1977, Matlack was traded to the Texas Rangers in a four-team deal that also involved the Atlanta Braves and Pittsburgh Pirates. With the Rangers, Matlack continued to be a dependable starter. His first season in Texas saw him achieve a 15-13 record with a 2.27 ERA, one of the best in the American League that year. Despite battling injuries during his time with the Rangers, Matlack remained an effective pitcher when healthy.

Matlack's career was characterized by his excellent control and ability to keep hitters off balance. Over his 13-year career, he accumulated a 125-126 win-loss record, a 3.18 ERA, and 1,023 strikeouts. His performance on the field earned him respect from teammates and opponents alike.

After retiring from professional baseball in 1983, Matlack remained involved in the sport, taking on various coaching roles. His knowledge and experience made him a valuable mentor to younger players, and he continued to contribute to the game in this capacity.

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