Forbes came out last week with its annual Major League Baseball franchise valuations, and the Mariners were 15th out of 30 teams at $1.45 billion.
But take that ranking with an ocean-sized grain of salt. The Forbes valuations have never included the value of any team-owned regional sports network (RSN), which the Mariners have and many teams don't.
Forbes calculations also don't count all the revenue a team generates through its own RSN.
This may not seem important to the average fan, but it is when it comes to discussions about the capacity of teams to take on player payroll.
Tack on the value of the team's ROOT Sports NW television holding and the Mariners no longer sit middle of the pack. No one knows for sure how many hundreds of millions ROOT Sports is worth, but if it's $300 million or $400 million, that vaults the Mariners much closer to the top 10.
Two years ago, when an internal sale allowed a group of minority owners led by John Stanton to assume control of the team, the club valued itself at $1.2 billion and the RSN at $200 million. I've since been told by a source with knowledge of the sale that the RSN value was significantly understated.
Why would this be?
Well, the sale wasn't to an outside group. It was to existing Mariners owners. Putting an accurate public price tag on the RSN wasn't critical.
All that mattered at that time was valuing the entire package at $1.4 billion so the ownership shares could change hands internally.
So, we don't really know.
Another thing not counted in Forbes' rankings is the total revenue an RSN can generate for a team. In the Mariners' case, they declare an annual broadcast-rights fee amount to MLB that they are paid by their RSN.
It's effectively the team paying itself, so, in theory, they could make up any number they want. MLB knows this and - for revenue-sharing purposes - uses strict guidelines to ensure teams declare fees commensurate to their market value and that aren't too drastically understated.
These annual fees also are what Forbes uses in its revenue calculations. But neither Forbes nor MLB knows how much money the team's RSN takes in.
For years, the biggest advantage to a team owning a network was that it could shield vast amounts of incoming revenue from MLB revenue-sharing rules. They declared the revenue as being generated by the network and not baseball operations.
MLB has gotten smarter over the years, but it isn't going to catch all the extra cash flowing in.
So knowing this uncounted revenue is out there is important toward understanding the capacity of teams to take on payroll. The Mariners are spending a team-record $167 million on payroll this season because of several back-loaded contracts hitting their peak.
This month, Mariners president and CEO Kevin Mather told Seattle Times staff reporter Ryan Divish in an interview that the team was pushing limits by using too high of a percentage of revenues on payroll.