Kylian Mbappe failed to find the target as Monaco were consigned to a 2-1 defeat on Leonardo Jardim's Sporting CP return.
Monaco boss Leonardo Jardim's return to the Estadio Jose Alvalade ended in a 2-1 friendly defeat to former club Sporting CP.
Jardim swapped Lisbon for Monaco in 2014 and his Ligue 1 champions were beaten by first-half goals from Bruno Fernandes and Bas Dost in the Portuguese capital.
Monaco named a strong line-up that included starts for in-demand teenage sensation Kylian Mbappe and promising midfielder Thomas Lemar, but Benjamin Mendy – linked with a move to Manchester City – was left out of the squad along with former Sporting player Joao Moutinho.