Which columns does my CSV need?

First name, last name, email and starting rating. Just a name per row is fine too; email and starting rating are optional. Both a comma and a semicolon work as a separator, and a header row is skipped automatically.

Will I get duplicate players if I import the same list again?

No. Slams skips rows whose email address is already in your club or already linked to a connected Slams profile. Players without an email are not deduplicated automatically, so fill in an email address wherever possible.

Can I export a ready-made participant list?

You export the schedule and the final standings per part as CSV. Both include the names of the teams and players, so they double as a participant overview. There is no separate standalone member list export.

Importing and exporting participants via CSV

Add your entire member list to Slams at once with a CSV file, and export the schedule or final standings back to Excel.

2 min read · Updated 18 July 2026

Already have a member list in Excel or Google Sheets? Then you don't have to retype it by hand. With a CSV file you add all your players to Slams in one go. And the other way around, you can export the schedule or the final standings of a part back to CSV so you can open it in Excel.

Importing participants via CSV

The import lives with your players. Go to Players in the dashboard, open the panel to add a player and choose the CSV import tab. That's where you upload your file. Prefer to create individual players or teams? Then read adding players and creating teams.

What the CSV file looks like

Slams expects these columns: first name, last name, email, starting rating. The import is flexible:

Both a comma (,) and a semicolon (;) work as a separator. Dutch Excel uses the semicolon by default.
A header row with words like "first name" or "name" is skipped automatically.
Just a name per row is fine too. Email and starting rating are optional.
A starting rating outside the 1.0000 to 10.9999 scale is pulled back within those limits. If you leave the field empty, the player gets starting rating 8.999. See the Slams rating explained.

What Slams does during the import

The import is set up smartly so you don't end up with duplicate players:

Already known? If an email address is already in your club, that row is skipped.
Existing Slams profile? If the email belongs to an existing Slams profile, Slams links the player to it and takes over the universal rating of that profile (which carries more weight than the starting rating in your file).
No profile yet? Then Slams creates a ghost player with the name and rating from your file. That player can still link a Slams account later.

When it's done, you see how many players were added.

Exporting the schedule and final standings

You export per part. Open a competition or tournament and use the Export button. You have two CSV options:

Schedule (CSV) with the round or group, court, time, both teams, the sets and games result and the status per match.
Final standings (CSV) with the positions, matches played and points or win/loss, per group if there are any.

The files use the semicolon as a separator, so they open neatly in columns in Dutch Excel. Besides CSV, you can also open the schedule as a print or PDF. You can read more about the content in how standings work and entering scores.

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Registrations

Players sign themselves up via a link.

For players

Profile, rating graph and challenges.

Features for clubs

Manage players and teams in one dashboard.

More in this category

Adding and managing players

Add players by email invitation, Slams search, manually or via a CSV import, and manage their details, rating and account from the Players page.

Creating teams

How to build duo teams within a part, add an optional team name and fill your participant list quickly in bulk.

Substituting an injured player

Replace a player who has dropped out of a duo team without breaking up the team, using a direct swap or an invitation link.

Managing the waitlist

Turn on a waitlist so people can keep registering when your event is full, then confirm them yourself once a spot opens up.

Coen ReekersFounder of Slams

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