As the Mariners begin their search for their third manager in five seasons, we at Mission Mariner are reminded of the letter Jack Zduriencik e-mailed to season ticket holders the last time the Mariners found themselves in this very position.

The letter written after the fateful 2010 season, which saw the Mariners lose 101 games, and was highlighted by the firing of manager Don Wakamatsu midway through the season.

The letter where Zduriencik stood tall and defied all those know-it-all arm chair general managers by confidently assuring everyone that there were “plenty of reasons to believe that our long-term plan is working.”

It’s now been three years since that bold assertion made by Zduriencik. An assertion that teetered   on arrogance considering the calamity that transpired both on and off the field that season. Nonetheless, it served as a direct response to the cynics who now had 2010 to use as confirmation for their dissension, while providing reason, for those thinking of jumping ship, to stay on board a little while longer.

First, the farm system.

“We’ve got a flock of top-rated prospects on their way to the big club. These include position players Dustin Ackley, Justin Smoak, Carlos Peguero, Nick Franklin, Kyle Seager, Johermyn Chavez, Greg Halman and Matt Mangini, along with hard-throwing pitchers like Michael Pineda, Blake Beavan, Dan Cortes, Mauricio Robles, Maikel Cleto and Anthony Varvaro. Many of our best prospects are headed for winter ball and the fall instructional league – they’re driven to improve and play at the next level.

Some of these youngsters will develop faster than others, but we’ve got a rich pipeline of talent. Impressive, considering how thin our minor league system was just a couple of years ago. Plus there are more top prospects coming: We have the #2 pick in the 2011 June draft and we continue to scout and sign top international players.”

Now, fourteen “top prospects” and a top draft pick – eventual selection Danny Hultzen – coming down a “rich pipeline” all of whom are “driven to improve and play at the next level” is pretty impressive.  Most every franchise would be lucky to have such talent in their farm system.

Except, today, eight of those top prospects are no longer with the team (Chavez, Halman, Mangini, Pineda, Cortes, Robles, Cleto and Varvaro), one is still in the minors (Peguero), one is dealing with a serious rotator injury (Hultzen), and four are still trying to prove they should stick on a big league roster (Smoak, Ackley, Franklin and Beavan).

Of that group of fourteen, only one has solidified himself as a productive everyday major league player (Seager).

So, the minor league talent hasn’t panned out as Zduriencik projected back in 2010.  No problem. There’s talent on the big league club, right?

“At the big league level, Mariners pitchers tied for the third best ERA in the American League in 2010. Felix Hernandez has fulfilled his potential as a perennial Cy Young candidate. Jason Vargas, Doug Fister and Luke French made major strides in 2010. We like our pitching; our staff is young, developing and hungry.

Two young players, catcher Adam Moore and outfielder Michael Saunders, got valuable playing time and impressed scouts around the league. Meanwhile, our four core players – Ichiro, Felix, Guti and Chone Figgins  – are signed to long-term deals.”

This time, Zduriencik names nine major league players, four of whom he specifically labels as “core” players, as well as group of pitchers singled out as essentially young, developing, top flight rotation arms.

And what franchise wouldn’t want that?   Not knowing any better, one would surmise the Mariners were sporting a solid core group of players to build around, two young impressive up-the-middle defenders, and one of the best young rotations in baseball.

Unfortunately, of those nine players named, six are no longer with the team (Vargas, Fister, French, Moore, Ichiro, Figgins), one spends more time on the DL than on the field (Guti), and one is still struggling to show he belongs on a big league roster (Saunders).

Of the four deemed “core” players, only Felix has lived up to the billing.  Regarding those Mariners pitchers who tied for the third best ERA in the American League?  Just Felix remains.

So, what does all this mean?

It means you can crumble up that letter from 2010 and throw it into the recycle bin.  Because all that’s really remaining from all of those “top prospects” and “core” major league players that Zduriencik boasted about is Seager, Felix and, um, well…that’s about it.

Seager and Felix.

It also means that for as much hope and excitement the Mariners want you to feel with the newest wave of top prospects to have reached the big leagues – Mike Zunino, Brad Miller, Taijuan Walker, James Paxton, and Nick Franklin – the 2010 season and the Zduriencik letter is a yet another stark reminder that prospect rankings are meaningless as it relates to future MLB success.

Because when the 2013 season kicked off, the Mariners started four of the top 30 prospects from 2010 – Montero (4), Ackley (11), Smoak (13) and Saunders (30).

All of whom were collectively ranked higher than the next subsequent catcher/infielder/first baseman/outfielder quartet ranked on that list – Buster Posey (7), Alceides Escobar (12), Logan Morrison (20) and Todd Frazier (43).  A group of players that every GM in baseball today would probably take over the foursome the Mariners had accumulated.

And if we are keeping it real, most every GM in baseball would probably just take Posey over Montero, Ackley, Smoak and Saunders

Which isn’t to say that those four can’t eventually live up to expectations.  Or that Zunino, Miller, Walker, Paxton, or Franklin won’t end up being productive major league players.  Rather, audacious boasting of unproven players will prove foolhardy more often than not, no matter what number precedes a player’s name on some prospect rankings list.

Which is probably why Howard Lincoln talked strictly about baseball operations instead of player evaluations when recently asked his personal thoughts on the current state of the team.  And considering how Lincoln, Zduriencik and the rest of the Mariners’ upper management team has seemingly adopted a dormant approach when it comes to expounding on organizational decision making, it’s not really surprising that Lincoln quickly side-stepped the opportunity to offer his opinion regarding the young players on the big league roster.

Or maybe Lincoln, Zduriencik and the rest of the Mariners’ upper management team learned their lesson from 2010, and are not prepared to make the same mistake twice.

Because Zduriencik’s 2010 letter – that infamous letter meant to show season ticket holders that the Mariners were, in fact, doing things right despite losing 101 games – now stands as a glaring beacon of irony, warning the baseball world of the dangers that come from prognosticating the future of prospects, especially by a franchise who’s successful return to playing competitive and meaningful baseball hinges on an uncompromising prospect-only rebuild methodology.