Roman Anthony Semproch (born January 7, 1931), also known as Baby and Ray, is a retired right-handed Major League Baseball pitcher who played from 1958 to 1961 for the Philadelphia Phillies, Detroit Tigers and Los Angeles Angels. 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 ERA. He played his final major league game on May 2, 1961.