LISBON, Portugal (AP) -- Jackson Martinez scored a hat trick to lead FC Porto to a 4-0 win at Guimaraes in the Portuguese league on Saturday.
Porto remained undefeated through 17 rounds this season and took a three-point overnight lead over Benfica at the top of the standings.
Defender Eliaquim Mangala got Porto rolling with a headed goal in the 14th minute.
Jackson then doubled the advantage by heading the ball home in the 37th.
The Colombia striker fired in Porto's third goal in the 56th before taking his league leading tally to 18 goals this season with another header in the 73rd.
The loss was Guimaraes first in seven games.
Also on Saturday, Sporting Lisbon's struggles continued as it lost 2-1 at Rio Ave.