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Undermine (Gem Grab)

Undermine Stats & Draft Guide

Undermine is a Gem Grab map with 1,176 Ranked battles of top players in the last 21 days. The best measured pick right now is Amber at 63% over 109 matches. Below: who wins here, who is safe to pick early, who to keep for later and who to avoid, each with the matches behind the number.

Gem Grab · mixed layout · 1,176 Ranked battles in the last 21 days · meta September 16 Balance Update
Ranked battles
1,176 · last 21 days
In Ranked rotation
Yes · last battle 2026-09-28
Best measured pick
Amber · 63% over 109 matches
Most picked
Rico · in 47% of battles

What the data says about Undermine

Over the last 21 days we counted 1,176 Ranked battles of top players on Undermine. 41 brawlers have at least 30 matches here, so they get a win rate; 54 more were picked too rarely to judge. The map is in the current Ranked rotation (last battle 2026-09-28).

Counted from Ranked matches of top players over the last 21 days, last updated 2026-09-29. Matches played before the latest balance change count for less. A brawler needs at least 30 matches on this map before we show a win rate.

Best Brawlers on Undermine by win rate

The strongest measured pick on Undermine is Amber: 63% over 109 matches (fairly reliable), picked in 16% of battles, 7 points above its Gem Grab average of 56%. Gus (57%) combines a winning record here with a high blind-pick safety, so it is the safest early picks. Ash (55%) wins here too but is easy to counter: keep it for a late pick. Max (48% over 299 matches) is among the most picked brawlers here yet loses more than it wins.

BrawlerWin rate on UndermineMatchesHow surePicked invs Gem GrabDraft verdict
Amber fighter63%109fairly reliable16% of battles+7 ptsstrong pick
Shade assassin61%133fairly reliable17% of battles0 ptsstrong pick
Gus support57%306reliable35% of battles+4 ptssafe early pick
Ash tank55%332reliable28% of battles+3 ptsstrong, pick late
El Primo tank55%166fairly reliable25% of battles+1 ptsstrong pick
Starr Nova fighter55%76early signal6% of battles+6 ptspromising
Nori fighter53%99fairly reliable14% of battles+4 ptsstrong pick
Janet marksman56%32early signal3% of battles+4 ptspromising
Wendy fighter52%156fairly reliable24% of battles-4 ptscoin flip
Sirius fighter52%82fairly reliable7% of battles+3 ptsstrong pick
Surge fighter51%199fairly reliable17% of battles+1 ptscoin flip
Alli fighter53%36early signal3% of battles+3 ptspromising

Showing the 12 strongest of 41 measured brawlers. "Picked in" is the share of Undermine battles with the brawler on either team. "vs Gem Grab" is the win rate here minus the same brawler's win rate across all Gem Grab maps.

Safe picks and risky picks on Undermine

Safe means winning here with a good sample and hard to punish when picked blind; risky means the numbers say it loses, or it wins but is easy to counter once the enemy sees it. The pick-order guide explains when to lock what.

Safe early picks

Winning record, a fairly reliable sample or better, and a blind-pick safety of at least 6/10 in the coaching model.

  • Gus — 57% over 306 matches (reliable), picked in 35% of battles, 4 points above its Gem Grab average of 54%. Blind-pick safety 7/10.

Strong, but keep for a late pick

Win here but are easy to counter: lock them in once the enemy draft is visible, after checking which counters are still open.

  • Ash — 55% over 332 matches (reliable), picked in 28% of battles, 3 points above its Gem Grab average of 52%. Blind-pick safety 4/10.

Also winning here

Winning record without a strong pick-order signal, or with a sample that is still small.

  • Amber — 63% over 109 matches (fairly reliable), picked in 16% of battles, 7 points above its Gem Grab average of 56%. Blind-pick safety 5/10.
  • Shade — 61% over 133 matches (fairly reliable), picked in 17% of battles, in line with its Gem Grab average. Blind-pick safety 5/10.
  • El Primo — 55% over 166 matches (fairly reliable), picked in 25% of battles, in line with its Gem Grab average. Blind-pick safety 5/10.
  • Starr Nova — 55% over 76 matches (early signal), picked in 6% of battles, 6 points above its Gem Grab average of 49%. Blind-pick safety 5/10.
  • Nori — 53% over 99 matches (fairly reliable), picked in 14% of battles, 4 points above its Gem Grab average of 49%. Blind-pick safety 5/10.
  • Janet — 56% over 32 matches (early signal), picked in 3% of battles, 4 points above its Gem Grab average of 52%. Blind-pick safety 5/10.

2 more measured brawlers carry this verdict on this map; only the strongest 6 are listed.

Popular but losing

Among the 8 most picked brawlers on Undermine, yet losing more than winning.

  • Max — 48% over 299 matches (reliable), picked in 25% of battles, in line with its Gem Grab average. Blind-pick safety 7/10.

Map effect: who changes on Undermine

A gap of 4 points or more to the brawler's own Gem Grab average, with at least 30 matches on both sides. Compare with the live tier list: a modest overall tier can hide a Undermine specialist.

Better here than in Gem Grab overall

The Undermine specialists.

  • Amber — 63% over 109 matches (fairly reliable), picked in 16% of battles, 7 points above its Gem Grab average of 56%. Blind-pick safety 5/10.
  • Starr Nova — 55% over 76 matches (early signal), picked in 6% of battles, 6 points above its Gem Grab average of 49%. Blind-pick safety 5/10.
  • Nori — 53% over 99 matches (fairly reliable), picked in 14% of battles, 4 points above its Gem Grab average of 49%. Blind-pick safety 5/10.
  • Janet — 56% over 32 matches (early signal), picked in 3% of battles, 4 points above its Gem Grab average of 52%. Blind-pick safety 5/10.

Worse here than in Gem Grab overall

This layout works against them.

  • Mina — 31% over 83 matches (fairly reliable), picked in 7% of battles, 11 points below its Gem Grab average of 42%. Blind-pick safety 5/10.
  • Tara — 46% over 72 matches (early signal), picked in 6% of battles, 10 points below its Gem Grab average of 56%. Blind-pick safety 7/10.
  • Colt — 29% over 31 matches (early signal), picked in 3% of battles, 9 points below its Gem Grab average of 38%. Blind-pick safety 5/10.
  • Carl — 34% over 53 matches (early signal), picked in 5% of battles, 7 points below its Gem Grab average of 41%. Blind-pick safety 6/10.
  • Edgar — 43% over 93 matches (fairly reliable), picked in 8% of battles, 6 points below its Gem Grab average of 49%. Blind-pick safety 4/10.
  • Emz — 50% over 224 matches (reliable), picked in 19% of battles, 5 points below its Gem Grab average of 55%. Blind-pick safety 6/10.

Brawlers to avoid on Undermine

Clearly losing records on Undermine; the match count says how much weight to give each one.

  • Mina — 31% over 83 matches (fairly reliable), picked in 7% of battles.
  • Mortis — 40% over 171 matches (fairly reliable), picked in 15% of battles.
  • Carl — 34% over 53 matches (early signal), picked in 5% of battles.
  • Colt — 29% over 31 matches (early signal), picked in 3% of battles.
  • Lumi — 41% over 120 matches (fairly reliable), picked in 10% of battles.
  • 8-Bit — 38% over 64 matches (early signal), picked in 5% of battles.

Which roles win on Undermine

The best performing role on Undermine is tank: 53% over 680 matches. The weakest is thrower at 40% over 35 matches.

RoleWin rate on UndermineMatchesHow surevs Gem Grab
tank53%680reliable+1 pts
support50%829reliable0 pts
fighter50%1,924reliable+1 pts
controller49%536reliable-2 pts
assassin49%1,017reliable-1 pts
sharpshooter48%1,122reliable+1 pts
marksman45%170fairly reliable-2 pts
thrower40%35early signal+5 pts

Roles are the coaching model's class per brawler.

Most picked on Undermine

How often top players take a brawler onto Undermine, and how it went. Popular is not the same as good.

  • Rico — picked in 47% of battles, 50% over 550 matches (reliable) (coin flip).
  • Griff — picked in 36% of battles, 50% over 429 matches (reliable) (coin flip).
  • Gus — picked in 35% of battles, 57% over 306 matches (reliable) (safe early pick).
  • Colette — picked in 33% of battles, 50% over 309 matches (reliable) (coin flip).
  • Stu — picked in 30% of battles, 51% over 347 matches (reliable) (coin flip).
  • Ash — picked in 28% of battles, 55% over 332 matches (reliable) (strong, pick late).
  • Max — picked in 25% of battles, 48% over 299 matches (reliable) (popular but losing).
  • El Primo — picked in 25% of battles, 55% over 166 matches (fairly reliable) (strong pick).

How to read these numbers

A win rate only means something when enough matches sit behind it. Next to every number we say how sure we are:

  • reliable — 200 matches or more: a solid basis for a verdict.
  • fairly reliable — 80 to 199 matches: enough to spot a real pattern.
  • early signal — 30 to 79 matches: a hint, not a verdict.
  • too few matches — fewer than 30 matches, so we do not show a win rate yet.

A 60% win rate over 40 matches can easily be luck; a 54% win rate over 800 matches is a real edge. Brawlers with fewer than 30 matches are listed without a win rate on purpose.

The coaches' view on Undermine

The coaching model's view of the mixed layout of Undermine, next to the measured numbers above. When the two disagree, trust the one with more matches behind it.

Coaches' early picks: Gene, Tara combine a positive map fit with high blind-pick safety.

Coaches' later picks: Spike fit the map but are easier to counter, so keep them for the middle or last pick.

Mode context

Undermine is a Gem Grab map. Read the mode guide for the win condition and role requirements, then apply the map-specific picks above.

Other Gem Grab maps

Data confidence

The measured numbers on this page come from 1,176 Ranked battles of top players on Undermine in the last 21 days. 12 brawlers have enough matches here to show a win rate; 54 more were picked too rarely. Matches played before the latest balance change count for less, and no win rate is shown below 30 matches.

Need the best pick for your actual draft? Open the Draft Tool.