the first game of a doubleheader against the Tigers, Plews hit a home run against Hall of Famer Jim Bunning in a 7–2 loss. Yost played third again from May 27 through May 31, but after that, Plews played the position primarily through June 15. After that, Plews was used intermittently as a second baseman, third baseman, and pinch hitter until the end of July, when he became the starting second baseman for most of the rest of the season. On September 9, he hit his only other home run of the year, also against Bunning, as the Tigers beat the Senators 7–1. In a career-high 111 games, Plews batted .258 with 46 runs scored, 98 hits, and 29 RBI. Plews lost his starting role completely in 1959, as Reno Bertoia became the Senators' everyday second baseman. Plews appeared in a mere 27 games through June 10, batting .225 with nine hits in 40 at bats. On June 11, 1959, Plews was traded by Washington with pitcher Dick Hyde to the Boston Red Sox, in exchange for infielder Billy Consolo and pitcher Murray Wall. Hyde, who was subsequently found to be suffering from an arm injury, was returned to the Senators, and Wall was returned to the Red Sox on June 14. The Red Sox did not use Plews much more than the Senators had, playing him in just 13 games (in which Plews recorded only 12 at bats). On July 26, he pinch-hit for pitcher Tom Brewer and hit into a double play in a 5–4 loss to the Kansas City Athletics. Two days later, Plews and Wall were both sent to the minor leagues so Boston could call up Earl Wilson and Jim Mahoney. Plews would never appear in another major league game. Later career Plews finished out the 1959 season with the Minneapolis Millers of the American Association, batting .252 in 46 games. He spent the 1960 season with the Toronto Maple Leafs of the Class AAA International League, hoping to get called up by the Cleveland Indians. In 81 games, Plews batted .278 with 24 runs scored, 54 hits, no home runs, and 19 RBI, but he was never called up. Beginning 1961 with Toronto, he batted a mere .161 in 31 at bats before getting demoted to the Birmingham Barons of the Southern Association. In 82 games, he batted a career-high .372 and recorded 112