The lone remaining Major League Soccer team in the CONCACAF Champions League would need a major comeback to reach the finals.
Monterrey routed Sporting Kansas City 5-0 on Thursday in Guadalupe, Mexico, in the first leg of a total-goals semifinal series. The return leg will be played April 11 in Kansas City, Kansas.
Dorlan Pabon and Aviles Hurtado scored in the seventh and 14th minutes, respectively, to give Monterrey a fast start. The game was secured when Jesus Gallardo scored in the 55th minute, Nicolas Sanchez converted a penalty kick in the 70th minute, and Pabon found the net again in the 76th minute.
The result ties the biggest margin for victory in a match in the CCL era along with Santos' 6-1 win against the Seattle Sounders in 2012 and a 2009 Cruz Azul 5-0 win over the Columbus Crew
In the first semifinal matchup Wednesday, host Tigres routed Santos Laguna 3-0 in an all-Liga MX matchup at San Nicolas de los Garza, Mexico. The second leg of that series will be played next Wednesday at Torreon, Mexico.
The two-legged final will be held in late April and early May.
No MLS team has won the competition since the LA Galaxy were champions in 2000. Mexican clubs have won every title since 2006.