Most blocks through the first 20 games of a WNBA season
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Brittney Griner leads with 87 blocks through her first 20 games of 2015, first of 3,717 player-seasons.
| # | Player and seasons | Value |
|---|---|---|
 Brittney Griner (2015 PHO)2015 | 87 | |
| Brittney Griner (2014 PHO)2014 | 77 | |
 Margo Dydek (2001 UTA)2001 | 76 | |
| Margo Dydek (2002 UTA)2002 | 73 | |
| Margo Dydek (1998 UTA)1998 | 70 | |
| Margo Dydek (2000 UTA)2000 | 65 | |
| Brittney Griner (2018 PHO)2018 | 63 | |
 Lisa Leslie (2008 LAS)2008 | 61 | |
| Margo Dydek (2003 SAN)2003 | 60 | |
| Lisa Leslie (2002 LAS)2002 | 59 | |
| Lisa Leslie (2003 LAS)2003 | 59 | |
| Brittney Griner (2013 PHO)2013 | 56 | |
 Sylvia Fowles (2010 CHI)2010 | 55 | |
| Sylvia Fowles (2013 CHI)2013 | 54 | |
| A'ja Wilson (2024 LVA)2024 | 53 | |
| Brittney Griner (2016 PHO)2016 | 53 | |
 Lauren Jackson (2002 SEA)2002 | 53 | |
| Candace Parker (2012 LAS)2012 | 52 | |
 Elizabeth Williams (2016 ATL)2016 | 51 | |
| Lisa Leslie (2004 LAS)2004 | 51 | |
| Lisa Leslie (2005 LAS)2005 | 51 | |
| Candace Parker (2008 LAS)2008 | 50 | |
| Ezi Magbegor (2022 SEA)2022 | 50 | |
| Ezi Magbegor (2024 SEA)2024 | 50 | |
| Brittney Griner (2017 PHO)2017 | 49 |