Vision control is a huge part of competitive League of Legends. We can measure teams’ level of vision control by looking at both how many wards they purchase and place, and how many of their opponents’ wards they clear out.
The statistics below are from the 18-game 2015 Spring split. Tiebreaker games are not included.
| Team | Total Wards Placed | Average Wards Placed per Minute | Total Stealth Wards Purchased | Total Vision Wards Purchased | "Free" Wards Proportion | Total Wards Cleared | Average Wards Cleared per Minute | Average Proportion of Enemy's Wards Cleared |
|---|---|---|---|---|---|---|---|---|
| Cloud9 | 1,840 | 2.71 | 440 | 280 | 61% | 698 | 1.04 | 39% |
| Counter Logic Gaming | 1,862 | 2.75 | 288 | 338 | 66% | 767 | 1.13 | 39% |
| Dignitas | 1,759 | 2.51 | 312 | 311 | 65% | 641 | 0.91 | 34% |
| Gravity | 2,089 | 2.88 | 216 | 260 | 77% | 659 | 0.89 | 34% |
| Team 8 | 2,036 | 2.91 | 306 | 274 | 72% | 727 | 1.02 | 39% |
| Team Coast | 1,726 | 2.60 | 321 | 350 | 61% | 556 | 0.83 | 32% |
| Team Impulse | 1,671 | 2.54 | 261 | 266 | 68% | 602 | 0.90 | 33% |
| Team Liquid | 1,994 | 2.78 | 362 | 329 | 65% | 627 | 0.87 | 34% |
| Team SoloMid | 1,757 | 2.56 | 351 | 305 | 63% | 651 | 0.94 | 33% |
| Winterfox | 1,926 | 2.81 | 370 | 280 | 66% | 628 | 0.91 | 33% |
Points of Interest:
Warding Volume: Team 8 and Gravity placed the most wards, both in total and per minute.
Free Wards: More than three-quarters (77%) of Gravity’s wards were placed for “free” (that is, they came from a trinket or a Sightstone). Compare to TSM, Cloud9, and Coast, all of whom placed 63% or less of their wards for free. This suggests that perhaps the junglers on those teams are less likely to buy a Sightstone, which has certainly been true for C9 Meteos in recent weeks.
Ward Clears: CLG, Cloud9, and Team 8 clear the most wards per minute. All three teams cleared out almost 40% of their opponents’ wards, on average.
Opponent Warding Volume: Team Solo Mid is in the bottom three for proportion of enemy’s wards cleared, but is fourth in wards cleared per minute. This is because teams place a very high number of wards when playing against TSM: in fact, TSM is second for average Opponent wards placed per minute (CLG is first). In effect, TSM and CLG seem to instill a lot of fear in their opponents, leading to greater gold investment in vision.