Saturday at 1:30 p.m., Toyota Park, Bridgeview, Ill.

Records: Union, 3-3-3; Fire, 2-5-1.

TV: NBC Sports Network.

Union on the road: 2-2-1; Fire at home: 2-2.

Goals for: Union, 12; Fire, 6.

Goals against: Union, 14; Fire, 14.

Last MLS outing: The Union played visiting Seattle to a 2-2 draw last Saturday. Chicago lost, 2-0, at Montreal on April 27.

About the Union: The Union will be without outside defender Sheanon Williams, who earned a red card in last week's draw with Seattle. . . . Central defender Jeff Parke is likely out with a hamstring injury. . . . Gabe Farfan is expected to replace Williams, while Bakary Soumare could make his first start of the year for Parke. . . . Jack McInerney is tied for the MLS lead with six goals. . . . The Union were 2-6-1 after nine games last season.

About the Fire: Chicago's best win was a 3-1 triumph over the visiting New York Red Bulls. . . . Maicon Santos has two goals, the only Fire player with more than one. Both goals came in the win over the Red Bulls. . . . Former Chestnut Hill Academy product Jeff Larentowicz has started all eight games at midfield and has one goal and one assist in his first season with Chicago after playing the previous three years in Colorado.

- Marc Narducci