Gregg Popovich all-time record: How close is the San Antonio Spurs legend to overtaking Don Nelson for most NBA wins as head coach?

With the Spurs’ win over the Rockets on Friday, Coach Gregg Popovich became the only coach in NBA history to reach 1,500 victories. Popovich is only 1 win away from breaking Don Nelson’s all-time regular-season win total of 1,335 set…