Tiers go by win rate, discounted for small samples: the top 15% are S, the next 25% A. Season 2 starts when Season 1 ends: Deadlock Season 2.
Over the last 30 days of Season 1 the top hero is Graves, winning 57.4% of 1,932,938 games across all ranks. S tier: Graves, Rat King, Paige, Seven, Victor, Kelvin and Haze.
Low elo (Obscurus to Acolyte): Graves (55.1%), Rat King (54.9%) and Paige (54.7%). High elo (Phantom to Eternus): Baba (54.5%), Wraith (53.7%) and Ivy (53.7%).
Until Season 1 ends, yes, it updates with each day's games. After the end it covers the season's last 30 days and stays as it is.
| S | 53.2%62,784 games | 62,784 |
| S | 53.0%27,418 games | 27,418 |
| S | 52.9%21,558 games | 21,558 |
| A | 53.1%12,314 games | 12,314 |
| A | 51.9%53,964 games | 53,964 |
| A | 52.1%26,271 games | 26,271 |
| A | 52.1%20,762 games | 20,762 |
| A | 52.0%17,877 games | 17,877 |
| A | 51.2%38,079 games | 38,079 |
| A | 51.4%16,410 games | 16,410 |
| A | 51.2%22,879 games | 22,879 |
| A | 51.0%28,868 games | 28,868 |
| A | 50.7%31,116 games | 31,116 |
| A | 50.7%25,432 games | 25,432 |
| B | 50.7%20,243 games | 20,243 |
| B | 50.7%17,716 games | 17,716 |
| B | 50.3%36,309 games | 36,309 |
| B | 49.7%25,713 games | 25,713 |
| B | 49.2%41,722 games | 41,722 |
| B | 49.2%19,616 games | 19,616 |
| B | 48.9%37,268 games | 37,268 |
| B | 49.3%8,603 games | 8,603 |
| B | 49.0%15,537 games | 15,537 |
| B | 48.5%17,443 games | 17,443 |
| B | 48.2%26,836 games | 26,836 |
| B | 48.6%10,112 games | 10,112 |
| B | 47.7%31,775 games | 31,775 |
| B | 47.7%34,447 games | 34,447 |
| B | 48.1%11,230 games | 11,230 |
| C | 47.5%38,093 games | 38,093 |
| C | 47.9%8,959 games | 8,959 |
| C | 47.1%13,350 games | 13,350 |
| C | 46.8%7,186 games | 7,186 |
| C | 46.2%27,556 games | 27,556 |
| C | 46.4%9,040 games | 9,040 |
| C | 45.7%20,326 games | 20,326 |
| C | 45.3%27,446 games | 27,446 |
| C | 45.3%20,309 games | 20,309 |
| C | 43.7%40,529 games | 40,529 |
| C | 43.9%8,241 games | 8,241 |