26.20 has been live for a few days, so here's how the buffs and nerfs from the patch notes actually played out.
Champions
| Champion | Change | Win rate 26.19 → 26.20 | Diff |
|---|---|---|---|
 Bard | Meep AP ratio 50% → 67%; Meep recharge 8s → 5s; Meep damage per 3 chimes 6 → 10 | 41.5% → 48.8% | +7.3 |
 Thresh | Passive souls 2 → 3; W cooldown 21–17s → 19–15s | 43.0% → 50.2% | +7.2 |
 Lee Sin | Passive attack speed 40% → 50%; passive energy +10; W shield 60–240 → 80–320; Q2 damage 60–180 → 80–240 | 41.3% → 44.6% | +3.3 |
 Swain | Damage taken 105% → 100%; healing 95% → 100%; soul fragment restore 6% → 3–6% by level | 48.4% → 50.7% | +2.3 |
 Garen | Passive regen up; W cooldown 22–12s → 18–12s; W shield 18% → 20% bonus HP; W stacks per minion 0.4 → 0.75 | 45.2% → 46.0% | +0.8 |
 K'Sante | W cooldown 14–10s → 10s; W damage reduction 30% → 45%; E shield 13.5% → 15% bonus HP | 42.0% → 41.2% | −0.8 |
- Thresh and Bard went from bottom tier to average.
- Lee Sin is clearly better but still near the bottom.
- Garen's buffs didn't move his win rate.
- K'Sante is picked ~30% more after his buffs, but his win rate did not improve overall.
Augments
| Augment | Change | Win rate 26.19 → 26.20 | Diff |
|---|---|---|---|
 Juiced | Damage-to-mana ratio 4.5% → 7% (80% for ranged); no longer drains mana | 45.9% → 48.1% | +2.2 |
 Squishy Slappy Grab | Cooldown 35s → 30s; damage 30–100 + 10% bonus HP → 50–150 + 15% bonus HP; shield 35–150 → 50–200 | 46.6% → 48.2% | +1.6 |
 Shark Tempest | Slow 30% → 40%; area damage 50–100 → 100–200; attached damage and ratios up | 47.0% → 48.4% | +1.4 |
 Triggered Inferno | Cooldown 15s → 5s | 46.9% → 47.6% | +0.7 |
 Leg Day | Slow resist 40% → 50% | 50.1% → 50.2% | +0.1 |
 Spell Split | Splits at missile end or on recast instead of on first hit | 47.8% → 47.3% | −0.5 |
- Juiced nearly doubled in pick rate and is greatly improved on many ADCs:
Kai'Sa 40% → 50%, 
Jinx 40% → 54%, 
Kog'Maw 39% → 49%. - Squishy Slappy Grab climbed out of the bottom tier but is still below average.
- Triggered Inferno's 15s → 5s cooldown barely moved its win rate.
Bug fixes
Ivern + 
Minionmancer has the biggest win rate jump of any bug fix. Minionmancer's damage amp now applies to Ivern's R (Daisy), and Ivern with Minionmancer went from 44.3% → 49.1% (+4.8).