Most blocks through the first 20 games of an NBA season since 1983-84
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Mark Eaton leads with 108 blocks through his first 20 games of 1984-85, first of 16,194 player-seasons since 1983-84.
| # | Player and seasons | Value |
|---|---|---|
 Mark Eaton (1984-85 UTA)1984-85 | 108 | |
 David Robinson (1991-92 SAS)1991-92 | 103 | |
 Dikembe Mutombo (1995-96 DEN)1995-96 | 100 | |
 Hakeem Olajuwon (1989-90 HOU)1989-90 | 91 | |
| Mark Eaton (1986-87 UTA)1986-87 | 91 | |
| Hakeem Olajuwon (1992-93 HOU)1992-93 | 89 | |
 Hassan Whiteside (2015-16 MIA)2015-16 | 88 | |
| Dikembe Mutombo (1993-94 DEN)1993-94 | 87 | |
| Mark Eaton (1988-89 UTA)1988-89 | 84 | |
 Tree Rollins (1983-84 ATL)1983-84 | 83 | |
 Dwight Howard (2008-09 ORL)2008-09 | 82 | |
| Hakeem Olajuwon (1993-94 HOU)1993-94 | 82 | |
| Alonzo Mourning (1999-00 MIA)1999-00 | 81 | |
| Shaquille O'Neal (1992-93 ORL)1992-93 | 81 | |
 Shawn Bradley (1996-97 NJN)1996-97 | 81 | |
 Theo Ratliff (2000-01 PHI)2000-01 | 80 | |
| Alonzo Mourning (1998-99 MIA)1998-99 | 79 | |
| Andrei Kirilenko (2004-05 UTA)2004-05 | 78 | |
| Hakeem Olajuwon (1991-92 HOU)1991-92 | 78 | |
| David Robinson (1990-91 SAS)1990-91 | 77 | |
 Shawn Bradley (1997-98 DAL)1997-98 | 77 | |
| Wayne Cooper (1985-86 DEN)1985-86 | 77 | |
| David Robinson (1992-93 SAS)1992-93 | 76 | |
| David Robinson (1993-94 SAS)1993-94 | 76 | |
| Manute Bol (1991-92 PHI)1991-92 | 76 |
Method
- The data has blocks for every game since 1983-84, so 6,422 player-seasons from before then aren't here.
- 25 player-seasons aren't here because a game in their window has no line recorded.