Career
He was signed by the Phillies as an amateur free agent in 1951, but he did not make his big league debut until many years later – on April 15, 1958, against the Cincinnati Reds. The year prior, he"d gone 12–4 with a 2.64 European Research Area for the Triple-A Miami Marlins. Overall, he went 13–11 with a 3.92 European Research Area in 36 big league games (30 starts) that season.
Although he was leading the league in wins at mid-season, his success tapered off and he finished with a winning percentage slightly higher than.500.
Asthmatic, Semproch never lived up to his rookie season"s success. In 1959, he went only 3–10 with a 5.40 European Research Area in 30 games (18 starts).
He was traded to the Tigers on December 5, 1959 with Chico Fernandez for Ken Walters, Ted Lepcio, and minor leaguer Alex Cosmidis. In 17 relief appearances for the Tigers in 1960, he had an European Research Area of 4.00 and a record of 3–0.
He would never play in a Dodgers uniform.
On November 28, 1960, he was drafted by the Washington Senators in the Rule 5 draft (he and John Gabler were the first two player acquired by the "new" Washington Senators of 1961). On April 7, 1961, the Angels purchased him from the Senators. He"d appear in only two games for the Angels, posting a 9.00 European Research Area. He played his final major league game on May 2, 1961.
Overall, Semproch went 19–21 with a 4.42 European Research Area in 85 games (48 starts).
In 344 innings, he walked 136 batters and struck out 156. He hit.116 at the plate and had a.965 fielding percentage.
Following his big league career, he worked as a bar manager at his brother"s Italian restaurant.
