Sam and Seth Levinson, longtime agents for Mets third baseman David Wright, will be disciplined by the players' union for failing to monitor an associate who allegedly attempted an elaborate cover-up of Melky Cabrera's steroid use.

According to a person familiar with the situation, the Levinsons will be censured by the union for failing to adequately supervise Juan Nuñez, a "rogue agent'' who allegedly schemed to create a website touting a bogus supplement. He planned to use the fake product and website to explain Cabrera's positive test and suspension.

The source said a separate investigation launched by Major League Baseball is ongoing.

Since August, baseball has been looking into allegations that the Levinsons played a role in helping clients procure performance-enhancing drugs. The charges, which the agents refute, reportedly stem from former client Paul LoDuca.

But Monday, Yahoo! Sports reported that the union has cleared the Levinsons and the ACES agency of any wrongdoing and will not investigate past steroid allegations.

In the wake of the investigations, the Levinsons have lost several clients, including Shane Victorino, Jonny Gomes and Nyjer Morgan.

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Wright, however, has been outspoken about sticking with the only agency he's known as a player. The Levinsons are handling Wright's talks with the Mets on a long-term contract extension.

Both parties remain in contact, though the sides are not close to an agreement.

Dickey honored by peers. R.A. Dickey has been recognized by his peers as the National League's Outstanding Pitcher. The Mets' 20-game winner earned the Players Choice Award, which is voted on by major-league players.