PvP IVs Explained

Why Low Attack Is Good in Great League & Ultra League

If someone told you that a 0/15/15 Pokemon is better than a 15/15/15 for PvP, you'd think they were crazy. But in Pokemon GO's CP-capped leagues, it's true — and understanding why is the key to building a winning PvP team.

The Problem: CP Caps and Attack Weighting

Great League has a 1,500 CP cap. Ultra League has a 2,500 CP cap. Your goal is to squeeze the most total stats into a Pokemon while staying under that cap.

Here's the CP formula again:

CP = floor( (Attack × √Defense × √Stamina × CPM²) / 10 )

The critical detail: Attack is not under a square root. Defense and Stamina are. This means each point of Attack IV increases CP more than each point of Defense or Stamina IV.

A high Attack IV pushes CP up faster, which means your Pokemon hits the CP cap at a lower level. A lower level means a lower CPM (Combat Power Multiplier), which reduces all stats — including Defense and Stamina.

🧮 The Key Insight A Pokemon with low Attack IVs can be powered up to a higher level before hitting the CP cap. That higher level gives it more total stats (effective Attack × Defense × Stamina) even though its Attack IV is lower. The bulk gained from extra levels more than compensates for the lost Attack IV points.

Worked Example: Azumarill in Great League

Azumarill is one of the most iconic Great League Pokemon. Let's compare three different IV spreads:

IVs (Atk/Def/HP)Max Level ≤1500 CPStat ProductRank
0/15/15~Level 43Highest~Rank 1
8/15/15~Level 40.5Medium~Rank 50
15/15/15~Level 38Lowest~Rank 750+

The 0/15/15 Azumarill reaches 5 more levels than the 15/15/15 one before hitting the 1,500 CP cap. Those extra levels add significant bulk (Defense × Stamina), and the slight loss in raw Attack is far outweighed by the extra survivability.

In practice, a Rank 1 Azumarill wins matchups that a Rank 750 Azumarill loses — not because it hits harder, but because it survives longer, which means more fast move damage and more charged moves.

Stat Product: The PvP IV Metric

Stat Product is the standard metric for PvP IV quality:

Stat Product = Effective Attack × Effective Defense × Effective Stamina

Where effective stats = (Base Stat + IV) × CPM at the Pokemon's level.

PvP IV ranking tools like PvPoke rank every possible IV combination by stat product under the CP cap. Rank 1 is the IV spread with the highest stat product — usually something like 0/15/15 or 1/15/15.

How Many IV Combinations Exist?

Each IV can be 0–15, so there are 16 × 16 × 16 = 4,096 possible IV combinations per species per league. Rank 1 is the best, Rank 4,096 is the worst.

How Much Does Rank Matter?

The stat product difference between Rank 1 and Rank 100 is usually less than 2%. Between Rank 1 and Rank 500, it's typically 3–5%. This means:

💡 Don't Wait for Perfect A Rank 200 Pokemon of the right species is far better than not having that species at all. Build what you have, and upgrade IVs later if you find better ones.

When This Does NOT Apply

1. Master League (No CP Cap)

With no CP cap, higher level always means higher stats. 15/15/15 is always best in Master League. There's no reason to use low Attack IVs when there's nothing capping your CP.

2. Pokemon That Max Out Below the Cap

Some Pokemon can't reach 1,500 CP even at Level 51 with 15/15/15 IVs (like Medicham in GL before Mega Evolution considerations, or Sableye). For these species, 15/15/15 is best even in Great League — they can't reach the cap, so there's no reason to lower Attack.

3. CMP Ties (Charged Move Priority)

When both players use a charged move at the same time, the Pokemon with higher Attack goes first. In mirror matches (same species vs same species), having +1 Attack IV can win the CMP tie. Some players intentionally run slightly higher Attack IVs to win CMPs against common opponents.

4. Attack Breakpoints

Occasionally, a specific Attack IV is needed to reach a "breakpoint" — where your fast move does +1 damage against a common opponent. These are matchup-specific and niche, but advanced players do consider them.

PvP IV Search Thresholds

When searching for PvP-relevant Pokemon in-game, these are the common IV filters:

GateSearch StringWhat It CatchesUse Case
Very Strictattack0-1&defense14-15&hp14-15~Top 10 ranked IVsOnly the very best
Strictattack0-2&defense13-15&hp13-15~Top 100 ranked IVsCompetitive players
Balancedattack0-5&defense10-15&hp10-15~Top 300 ranked IVsGood enough for most
Relaxedattack0-7&defense8-15&hp8-15~Top 500 ranked IVsDon't want to miss candidates
⚠️ Remember: Species Matters More Than IVs A Rank 500 Azumarill is still a top-tier Great League pick. A Rank 1 Rattata is still Rattata. Focus on getting the right species for PvP first, then optimize IVs within those species.

PvP IVs by League

Great League (CP ≤ 1,500)

The most accessible and diverse league. Low Attack / High Def+HP is the standard. Some top families to look for with PvP IVs:

Ultra League (CP ≤ 2,500)

Same IV logic as Great League — low Attack, high Def+HP. More expensive to build. Top families:

Master League (No CP Cap)

15/15/15 is always optimal. No CP cap means higher IVs = higher stats. Top families:

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