New England striker Joe-Max Moore will be out 4-6 weeks after spraining the medial collateral ligament in his left knee during a game against the Atlas reserves in Mexico. The injury occurred when an Atlas player fouled Moore in the final minutes of New England’s 3-0 win in Guadlajara on March 16. The U.S. national team star is expected to begin rehabiliation next week and is expected to rejoin the Revolution lineup in early May. New England will continue training in Guadalajara until March 26. The Revolution dropped a 5-3 decision to Tecos of the Mexican First Division on March 17. Imad Baba scored twice, and Raul Diaz Arce added the third for New England.

Chicago trades for Zak Ibsen

The Chicago Fire acquired defender Zak Ibsen from the Dallas Burn in exchange for a conditional pick in the 1999 college draft. Ibsen played in 22 matches in 1996 (16 with Dallas and six with New England), scoring one goal. He spent the 1997 season playing pro beach soccer. Ibsen has reported to Fort Lauderdale, Fla., where the Fire will face the Miami Fusion on March 21.