ROSA

Who is ROSA

ROSA is a brawler of Rare rarity, class Tank. This article summarizes their performance in the current competitive meta: best map, hardest counters, and the weekly trend of their win rate. The numbers come from top-PRO battles over the last 90 days, Bayesian-smoothed so a brawler with a small sample doesn't show a misleading percentage.

Over the 30-day window, ROSA has shown up in 915 battles with a global win rate of 73.0%. That window belongs to the figure itself and is shorter than the one feeding the rest of the page, because a win rate needs recent data so it doesn't drag along a meta that already moved on.

Across the full 90 days, ROSA has a pick rate of 0.6%. That pick rate is the share of matches where a top-PRO player chose ROSA out of every available brawler, so it works as a thermometer for how meta they are right now. It uses the long window on purpose, because a brawler's popularity shifts more slowly than their win rate.

Across the full roster, ROSA's trend is among the weakest: their win rate is falling below 5% of brawlers with a measurable trend this week. That signal often foreshadows the meta turning against the brawler before it even shows in their global win rate.

The two figures for ROSA tell different things. The observed win rate, 73.0%, measures how often it wins in the hands of a top 200 player from its country. The discounted strength, 53.4%, estimates how often it would win against a mid-level opponent once the mix of opponents it happened to face is discounted. The first one orders the lists across the site and the second sits beside it, as context.

ROSA sits on the first paid-rarity step of the collection, the Rares. At this tier the Coin cost to bring them to power 11 stays reasonable and the investment in gadgets and star powers pays off quickly, so almost every competitive roster ends up routing through these brawlers as support or as a specific pick for maps where the kit fits better than higher-rarity options.

As a Tank, the job is to absorb damage, create space and start favorable close-range fights. The tank is usually the first to commit to the mode objective, soaking enemy supers so the rest of the team can position without taking them. Defensive gears tend to outperform offensive ones, and matchups against throwers or snipers dictate when and where it's safe to commit the super.

Best maps for ROSA

The best map for ROSA is Grass Knot in Brawl Ball, with a Bayesian-adjusted win rate of 81.4% over 43 battles. That puts them above their class average in this mode, so it's worth picking ROSA when that rotation is live. A strong run on Grass Knot usually combines favorable geometry (short ranges or cover) and a mode whose objective plays into the brawler's kit.

ROSA's performance is highly map-dependent: there are 16.1 percentage points between their best and worst map. That high variance means it pays to check the rotation before locking them in, because the same brawler swings from one of the best options to a clearly unfavorable pick depending on the map.

As a second map option, ROSA also performs well on Pinhole Punt (Brawl Ball) with a 80.3% win rate, only 1.1 points off their best map. When the gap between the top two maps is this small, picking one over the other comes down to the enemy team more than the brawler itself.

Rounding out the podium, ROSA holds a 78.0% win rate on Hard Rock Mine (Gem Grab) over 100 battles. Having three competitive maps widens the rotation windows worth bringing them in for, not just their signature map.

Just above their worst result, ROSA also struggles on Konnakol, where their win rate sits at 66.3%. Keep this map on your radar as a second warning sign when deciding the pick.

On the opposite end, Singed Earth (Brawl Ball) drops ROSA's win rate to 65.3%. That's the bottom tail of a 16.1-point range between their best and worst map, so if that rotation comes up during a session, consider a different brawler to avoid throwing matches.

Counters and matchups

ROSA clearly dominates the matchup against EDGAR: across the 132 recorded battles for that pairing, their win rate climbs to 79.3%. If you spot EDGAR on the enemy team in draft, that lane is an edge for ROSA — seek the duel out rather than avoid it.

Their second-best matchup is against DYNAMIKE, where ROSA holds a 78.7% win rate over 43 battles. Two strong favorable counters like these give ROSA real value as a targeted pick against comps that lean on those two brawlers.

Where ROSA has a clear disadvantage is against GUS: their win rate drops to 61.3% across the 80 battles recorded for that matchup. If GUS shows up on the enemy team, consider not picking ROSA or changing the game plan to avoid the shared lane, because GUS wins that exchange.

Per-brawler matchups are the smallest-sample metric on the page: for ROSA the samples range from 32 to 132 battles. Read them with the confidence that sample implies — a matchup at the low end says far less than one backed by the high one.

This section lists the matchups where ROSA performs worst and best over the last 30 days, sampled from top PRO players and smoothed with Bayesian WR to avoid noise.

Read each row left to right: brawler, win rate vs ROSA, and battle sample. The larger the sample, the more reliable the number.

Loses most against

Brawler	WR	Battles
GUS	61.3%	80
BO	63.6%	32
EMZ	64.6%	48
PIPER	66.8%	35
POCO	67.8%	37

Dominates

Brawler	WR	Battles
EDGAR	79.3%	132
DYNAMIKE	78.7%	43
COLT	77.4%	110
GRIFF	77.3%	87
TICK	76.5%	66

Star Powers, Gadgets and Hypercharge

To get the most out of ROSA in the current meta, prioritize upgrades by synergy with their kit, not by gem cost. Star powers, gadgets and hypercharge change tiers depending on the meta, so the upgrade priority is dynamic.

As a general rule, the first profitable upgrade for ROSA is usually the star power with the highest pick rate in PRO tournaments, followed by the gadget that best fits their role (lane, support, or pick). Hypercharge, when it exists, comes last because it costs more Coins and Power Points and only triggers with a full super bar.

By game mode, ROSA performs best in Basket Brawl, with a 74.3% win rate over 845 battles — the mode with the most recorded sample for this brawler. That makes Basket Brawl the context where their performance is most reliable and where investing in upgrades pays off most clearly.

Beyond the immediate meta, the upgrade path for ROSA should prioritize what moves the win rate needle the most: power 11 before gears, first star power before second, primary gadget before any hypercharge. Hypercharges cost a lot of coins and power points and only activate with a full super bar, so their real priority drops toward the end of the checklist.

Weekly meta analysis

Over the last 7 days, ROSA's win rate dropped from 79.2% to 72.4%, a fall of −6.9 points versus the previous half of the window. With both halves above the sample minimum, that drop is a real signal: the meta is moving against ROSA, usually from a rotation of maps or a rising counter.

Compared with the rest of the roster, that move leaves ROSA falling below 5% of brawlers with a measurable trend this week — they're at the bottom end of those losing ground. It doesn't mean they're unplayable, but it's worth waiting for the next map rotation before prioritizing their investment.

Every percentage on the ROSA page comes from real battles played by the world's top players, aggregated with statistical smoothing and recomputed every six hours. If you want to understand why one map performs better than another or how a rotation affects the win rate, the methodology page covers the technical detail step by step.