and Philadelphia Athletics (1952). His contract was sold by the Senators to the Athletics on May 13, 1952. In ten seasons he played in 597 games and had 1,507 at bats, scored 200 runs, and compiled 346 hits, 55 doubles, 18 triples, 26 home runs, 151 runs batted in, 32 stolen bases, 202 walks, with a .230 batting average, .323 on-base percentage, .342 slugging percentage, 515 total bases and 14 sacrifice hits. Robertson succeeded Ossie Bluege as the Senators' farm system director in 1958, then moved to Minnesota along with the franchise after the 1960 season. In his dozen years in that role, the organization produced four Hall of Famers: second baseman and seven-time batting champion Rod Carew, outfielder and three-time batting champ Tony Oliva, southpaw pitcher Jim Kaat, who won 283 games over his 25-year MLB career, and right-hander Bert Blyleven, whose 287-win, 22-year career began in Robertson's minor league system in 1969. The organization also developed American League Most Valuable Player Zoilo Versalles, Rookie of the Year Bob Allison, and other players who turned the Twins into pennant contenders for much of the 1960s. In 1970, Robertson returned to uniform as bench coach for Twins' manager Bill Rigney as the team won the American League West Division championship. But, after that season, he died from injuries suffered in an automobile accident in Houghton, South Dakota, at the age of 51. He was elected to the Canadian Baseball Hall of Fame in 2007. Robertson was the first Major League Baseball player to inadvertently kill a spectator at a baseball game, and the only one ever to do so with a thrown ball. During a 1943 game at Griffith Stadium against the Cleveland Indians, Robertson fielded a grounder hit by Ken Keltner. His throw to first baseman Mickey Vernon was high, and went into the front row of the stands, where it struck 32-year-old Clarence Stagemyer, who, after shaking his head a few times, said he was all right. Nevertheless, the Senators' team doctor looked him over and told him to go to the hospital. Stagemeyer did, and died there the following day of concussion and a skull fracture. Navy service Robertson joined the Navy Reserve in 1944. On October 25, 1944, he reported aboard the Naval Air Station Kaneohe Bay, Hawaii as a Specialist (Physical Training Instructor) 1st Class Petty Officer. He played baseball for the NAS Kaneohe Bay