[MLS] Portland’s MLS opener April 14 against Chicago is a sellout, and the team has also sold out its allotment of season tickets for the 2011 season, the club announced Tuesday.

The club's season-ticket threshold of 12,500 has been reached, and a waiting list has been established. The Chicago game sold out quickly after single-game tickets went on sale Monday night, and the team also announced only obstructed-view seats are available for the inaugural MLS home match against Northwest rival Seattle July 10. The remaining tickets for the Seattle game went on sale Tuesday morning.

Limited seating remains for home g ames against FC Dallas (April 17), New York (June 19), Los Angeles (Aug. 3) and Vancouver (Aug. 20). Most teams are still selling season tickets and final per-team totals won’t be determined until next month, but the 12,500 figure puts Portland behind only Seattle, Vancouver and Toronto amongst the 18 MLS teams at this time.

The Timbers’ full and partial season-ticket packages include a friendly against Ajax Amsterdam on May 25 that was also announced Tuesday. The 29-time Dutch league champion and three time European Cup (now Champions’ League) winner plays Portland at JELD-WEN Field at 7 p.m.

Portland lost its MLS debut match to defending champion Colorado, 3-1, last weekend and plays at Toronto Saturday.