Brazil and Colombia warmed up for the Copa America with victories in their final friendlies before the tournament starts on Friday, and there was Chelsea involvement in both games.
Brazil took on fellow Copa entrants Panama in Denver, Colorado and got off to a flying start when experienced Benfica striker Jonas prodded Dunga's team ahead from close range after they had capitalised on some defensive uncertainty.
Brazil were almost entirely dominant from then on in and Willian was one of a number of players who came close to adding a second goal before the break, seeing a well-struck shot from inside the box blocked by a defender.
They did double their lead on 73 minutes - soon after Willian had been replaced - when Gabriel of Santos, a debutant, slotted home from 12 yards out.
That goal completed the scoring in Brazil's last friendly before their Copa America opener against Ecuador in California next Sunday morning UK time.
Another of the pre-tournament favourites, Colombia, also won by a two-goal margin, defeating Haiti 3-1 in Miami.
Juan Cuadrado, who spent the 2015/16 campaign on loan at Juventus, struck the second goal with a cute finish from a tight angle on 54 minutes. That restored his nation's advantage after Haiti, who had a man sent off, cancelled out an early Colombian opener.
Cuadrado was subbed midway through the half and there was time for Colombia to add a third before the end. Jose Pekerman's team will go into Friday night's tournament opener against the hosts America on a high having won all three of their international fixtures in 2016.