Shiny Suit Man, Here you go with the biggest turn around in a season of wins from a top drafted rookie entering there first year in the NBA.
#3 Larry Bird, 1978-79 season Boston went 29-53, But in Bird's rookie year 1979-80 they went 61-21, a 32 win turn a round.
#2 David Robinson, 1988-89 season Spurs went 21-61, But in David's rookie year 1989-90 they went 56-26, a 35 win turn a round from the year before.
#1 Tim Duncan, 1996-97 season Spurs went 20-62, But in Tim's rookie year 1997-98 they went 56-26 A 36 WIN TURN A ROUND and still holds the record that I think won't be broken by any top rookie in the near future. The reason the Spurs went 20-62 in 1996-97 was on account of David Robinson being injured the whole year and only played 6 games for that season, And I have a feeling the spurs were losing most of those games on purpose so that they could get the #1 pick of Tim Duncan. Smart move on there part.