CHICAGO FIRE (6-6-6, 24 pts.) SEATTLE SOUNDERS FC (8-8-5; 29 pts.)7:30 p.m., Qwest Field.TV: KONG 6/16. RADIO: 97.3 FM.HEAD TO HEAD: The clubs tied in both matches last season: 1-1 at Chicago, 0-0 in Seattle. The Sounders will visit the Fire on Sept. 25.TEAM LEADERS: For Chicago – G 7, Marco Pappa; A 7, Patrick Nyarko; S 43, Pappa; SOG 19 Pappa; GGA 1.75. Sean Johnson. For Seattle – G 8, Fredy Montero; A 9, Montero; S 64, Montero; SOG 26, Montero; GAA 1.17, Kasey Keller. SIGI SCOUTING REPORT: “(Baggio) Husidic has had a good year so far. Certainly, Marco Pappa is a dangerous player because he is a left-footed guy who likes to play on the right and come inside at times. … Calen Carr has certainly come off his injury and is very dangerous and very effective. Patrick Nyarko, before he was injured, was another player who is very dangerous and effective. So they have a lot of speed (and) there is a lot of danger there.”NOTES: This game marks the return of original Sounders designated player Freddie Ljungberg for the first time since his trade to Chicago last month. … Other notable players on the Fire roster include Pappa, Mexican striker Nery Castillo, Brian McBride and defender Gonzalo Segares. Fire defender Wilman Conde is out due to yellow-card accumulation. … Half of Chicago’s wins have come on the road. … Seattle is unbeaten in its last six league matches. Chicago had a three-game unbeaten streak snapped last week at Houston, 4-3. … The Sounders are 5-4-1 against Eastern Conference opposition. … Seattle defender Leo Gonzalez is unavailable after receiving a red card Aug. 14 at Chivas USA. Either Zach Scott or Patrick Ianni is expected to start in his place. … Steve Zakuani, who has been out with a pelvic strain, is expected to be available. … If Seattle defender Tyrone Marshall receives a caution he must miss the next league game. … The referee is Ramon Hernandez.NEXT: The Sounders shift to U.S. Open Cup play Wednesday, meeting Chivas USA in a semifinal match at Starfire Sports Stadium in Tukwila. Seattle returns to league play Sept. 4 at New England.