20. John Beasley
The furthest this list of the all-time greatest San Antonio Spurs goes is to the mid-1960’s, during the earliest days of the ABA. That’s when the Dallas Chapparals, who later became the Spurs, roamed the professional basketball landscape.
Maybe the best player to be a Chapparal was John Beasley, a 6-foot-9 center/power forward. He was selected in Round 5 of the 1966 NBA Draft, but didn’t make his debut in pro basketball until the 1967-68 season.
For Dallas, Beasley immediately broke out as one of the best players in the ABA. He had 19.7 points and 12.8 rebounds in his rookie season, which earned him an All-Star Game appearance in 1968.
The 1968-69 season saw Beasley keep the production steady. He averaged 19.3 points and 10.6 rebounds, making a second consecutive All-Star Game. The same was down in 1969-70.
At age 26 in the 1970-71 season, Beasley saw his numbers begin to dip. No longer was he a double-double player, but one that quickly became a bench player. This happened after a midseason trade with the Utah Stars in 1971-72, and never saw the Texas A&M product return to normal.