In Tumblr’s '21 Year in Review, six of the top 10 most popular athletes on the social media platform were Formula One drivers, led by Lando Norris and Daniel Ricciardo at No. 1 and No. 2, respectively. Lewis Hamilton saw a big jump on the platform, moving from No. 21 all the way up to No. 5. USWNT player Christen Press rounded out the top 3, having finished No. 1 the previous year. Data was pulled from Oct. 21, 2020 - Oct. 20, 2021.
| TUMBLR'S MOST POPULAR ATHLETES OF '21 | ||
| RANK | ATHLETE | LEAGUE |
| 1 | Lando Norris | Formula One |
| 2 | Daniel Ricciardo | Formula One |
| 3 | Christen Press | NWSL |
| 4 | Sebastian Vettel | Formula One |
| 5 | Lewis Hamilton | Formula One |
| 6 | Tobin Heath | FA Women's Super League |
| 7 | Max Verstappen | Formula One |
| 8 | Charles Leclerc | Formula One |
| 9 | Nolan Patrick | NHL |
| 10 | Mathew Barzal | NHL |
