Alex Rodriguez's arbitration hearing will begin Sept. 30, a day after the regular season ends, a person familiar with the hearing said Friday.

Arbitrator Fredric Horowitz will listen to arguments from Rodriguez, who is appealing a 211-game suspension, and Major League Baseball, which levied the penalty in conjunction with his alleged involvement with the Biogenesis clinic. The hearing could take several days. Horowitz will have up to 25 days to render his decision. Rodriguez's attendance is not mandatory unless directed by Horowitz, according to the source.

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A preliminary hearing was held Wednesday, when both sides met with Horowitz to go over the exchange of documents requested in the discovery phase and to set the hearing date.

Rodriguez is expected to be represented by personal attorney Joe Tacopina and lawyers from the Players Association. MLB will be represented by executive vice president Rob Manfred, senior VP Dan Halem and the firm of Proskauer Rose LLC.

Rodriguez was suspended Aug. 5 as part of MLB's investigation of Biogenesis, the now-closed clinic in Miami that allegedly distributed performance-enhancing drugs. Rodriguez appealed the suspension and has been permitted to play pending an arbitration decision.