Благо розыгрыш закончился переигровкой, матчбол остался у нас.

Here благо does not mean the noun good / benefit. It is being used as a conjunction/particle meaning something like:

• luckily
• it’s a good thing that
• fortunately

So Благо розыгрыш закончился переигровкой... means roughly Luckily, the rally ended in a replay or It was a good thing that the rally ended in a replay.

This use of благо is a little more literary or elevated than simply saying к счастью.

Because Russian often uses the pattern:

• закончиться + instrumental

to mean to end in / to end with / to result in something.

So:

• розыгрыш закончился переигровкой = the rally ended in a replay

Other similar examples:

• Матч закончился ничьёй. = The match ended in a draw.
• Разговор закончился ссорой. = The conversation ended in a quarrel.

So the instrumental here shows the result or outcome of the action.

Закончился is the perfective past of закончиться. Perfective is used because the speaker is talking about a completed event: the rally came to an end.

If you used the imperfective, it would suggest an ongoing process or repeated background action, which would not fit as well here.

So:

• закончился = ended / came to an end
• not was ending or used to end

In general, розыгрыш can mean several things in Russian, including:

• a drawing/raffle
• a prank
• in sports, a rally or play sequence

Here it is clearly the sports meaning. It refers to the sequence of play for a point — for example, a rally in tennis, volleyball, or another sport.

So a learner should not automatically assume розыгрыш means raffle or joke; the context matters a lot.

In sports, переигровка means a replay or replaying of the point/game situation. It usually means the previous result does not count, and the point is played again.

So here it likely means something like:

• the rally was stopped or invalidated
• the point had to be replayed
• because of that, the match point remained with the speaker’s side

This is more specific than just the literal idea of playing again.

Матчбол means match point. It is borrowed from sports terminology.

It is treated as a masculine noun, which is why the verb is:

• матчбол остался

not осталась or осталось.

Many borrowed Russian nouns ending in a consonant are masculine, and матчбол follows that pattern.

Literally, остался у нас means remained with us or stayed on our side.

In sports context, it means that the match point was still ours — in other words, the replay did not take it away from the speaker’s team/player.

So у нас here is not really about physical location like at our place. It means in our possession / on our side / belonging to us in the game situation.

Russian often links clauses with just a comma when the relationship is clear from context.

Here the sentence is structured like this:

• Благо розыгрыш закончился переигровкой,
• матчбол остался у нас.

The first part gives the fortunate circumstance; the second part gives the consequence.

In more explicit English terms, the logic is something like:

• Luckily, since the rally ended in a replay, the match point stayed with us.

Russian does not always need an extra conjunction like и or потому что if the connection is already obvious.

Yes. Russian word order is flexible, and this sentence could be rearranged for slightly different emphasis.

For example, you might also see:

• Матчбол остался у нас, благо розыгрыш закончился переигровкой.

That would put the main result first and the explanation after it.

In the original sentence, putting благо first makes the speaker immediately frame the whole situation as a fortunate circumstance.

It sounds fairly natural, but it is definitely tied to sports commentary / sports discussion because of words like:

• розыгрыш
• переигровка
• матчбол

Also, благо gives it a slightly more expressive or somewhat literary tone than very plain everyday speech.

So the grammar is normal, but the vocabulary and style are a bit context-specific.

Russian has no articles, so there is nothing corresponding directly to the or a.

Whether матчбол means a match point or the match point is understood from context. In this sentence, it naturally means the match point relevant to the game situation.

Also, Russian often does not need a possessive like our when that idea is already expressed elsewhere:

• матчбол остался у нас = the match point remained with us / stayed ours

So у нас already supplies the idea of our side.