with a league leading 32 HR and 117 RBI. But his best power numbers were earlier, in 1969, when he smashed 47 HR with 118 RBI and 123 runs while hitting .275. In these early years he also could run pretty well, swiping 20 or more bases three times.
The second candidate that you could argue for as a starter is the less-well-known Bob Johnson (1933-42). Playing all but his last three seasons for the Philadelphia Athletics, he hit 20+ HR nine times and had seven consecutive 100+ RBI years. I'll rank him a very strong fourth on this all-time roster.
Although steroid use and other matters have somewhat disgraced Jose Canseco (1985-92, 97) his accomplishments remain impressive to me, and seem clearly deserving of the fifth spot on this club. He started by winning the Rookie of the Year award in 1986 after smashing 33 HR with 117 RBI (though striking out 170 times and only hitting .240). In 1988 he had a career year and took home AL MVP honors after becoming the first 40-40 man in history: .307, 42 HR, 40 SB, 120 runs, 124 RBI. He had five seasons of 30+ HR and 100+ RBI from 1986-91. In late 1992 he was traded to the Rangers, and played for several teams before returning to the A’s for one more season.
There is a bit of a drop off at this point, but Dwayne Murphy's (1978-87) combination of power and defense make him a deserving choice. One of the best players to never be chosen as an All-Star, he won six gold-glove awards, and hit 20+ HR three times during his tenure in Oakland. His 33 HR in 1984 were third best in the AL, and he also could run well swiping 26 bases in both 1980 and 1982.
This means that several good candidates are left off this roster, starting with Sam Chapman (1938-51). He hit 20+ HR five times, and had his best season in 1941 when he hit .322 with 35 HR, 106 RBI, and 97 runs. Bing Miller (1922-26, 28-34) is another quality guy who is left off, as he hit a cumulative .311 in his two stints with the franchise. Mostly a singles and doubles hitter, his best statistical season was arguably 1922 when he hit .335 (fifth best in the AL) with 21 HR and 90 RBI.
There are many others who deserve brief mention, and I'll cover them in chronological order. Socks Seybold (1901-08) and Topsy Hartsel (1902-11) played for the Athletics for most of the team’s first decade. Seybold's best season was 1902 when he hit .316 and led the AL with 16 HR. In 1902 Hartsel led the league with 109 runs and 47 SB. He had a good batting eye, as he led the league in walks five times. Rube Oldring (1906-16) joined the OF in 1906 and provided some speed as well. In 1913 he was amongst the AL leaders in both runs (101) and SB (40). Amos "Lightning" Strunk (1908-17, 19-20, 24) was a teammate of