League of Legends First Blood

One name, two different events

In Dota 2 and League of Legends the first kill of the game carries a built-in bonus for the team that lands it, so both sides have a mechanical reason to hunt or bait it. Level-one invades and early roams exist partly because of that reward. The size of the bonus is patch-dependent and has been changed more than once, so read the current patch notes instead of a number you remember from an old season.

In CS2 and Valorant there is no in-game bonus. The opening kill is a duel that creates a man advantage for the rest of the round, and operators settle it as the first kill of a round or of a map depending on how the market is written.

Read the wording, not the title

Markets sold under this heading settle on different events:

• First kill of the map, which happens once
• First kill of a named round, which happens once per round
• A named player to record it

Edge cases decide more of these bets than people expect. Ask how the operator treats a suicide, a kill by a tower or a neutral unit, a trade where both players die in the same instant, and a disconnect before the first engagement.

What moves the probability

Early-game identity rather than overall strength. A roster with a dedicated entry fragger, an aggressive jungler or a roaming support takes more opening duels than a team built to farm and gather information. Side selection and the map matter for the same reason: some setups are designed to take space early, others to concede it and punish afterwards.

An honest note on edge

One duel is close to a coin flip in most balanced matchups, and both sides are usually priced near even, which means operator margin is a large share of your expected result. It works as a small in-play position where you can watch the first thirty seconds before committing. It works badly as the anchor of a slip. Keep the stake at a level where losing several in a row changes nothing about your week.