On target: Bernard Mensah earns point for Vitoria Guimaraes
Bernard Mensah was on target as Vitoria Guimaraes and Nacional shared the spoils in Primeira Liga on Monday.
Manuel Machado's side was defeated by high-flying Sporting last week but Nacional - 10th in the standings - bounced back at Estadio da Madeira.
Matias gave Nacional a dream start after putting the ball in the back of the net barely a minute into the contest.
It was all Guimaraes, which cemented a spot in next season's UEFA Europa League via the third qualifying round, from that point on the back of two goals before half-time.
Valente equalised in the 14th minute and Bernard Mensah put the visitor ahead eight minutes before the interval.
But Nacional regrouped to earn a share of the spoils thanks to Matias, who levelled proceedings 13 minutes from time.