In May, Norris got the better of his Red Bull rival in Miami to secure his maiden F1 win, whilst Verstappen endured a torrid weekend in Monaco, finishing sixth on the iconic circuit.
The reigning champion appears to be returning to top form, however, as the season approaches its midway point.
Those wins came at a cost, however, with Verstappen being forced to use his fourth and final internal combustion engine of the season in Barcelona, after engine troubles hampered his practice in Canada.
Motorsport.com report that had there been any chance of his damaged engine from the Canadian Grand Prix been salvageable, it would have been returned to the team by now.
It means the 61-time race winner is faced with the prospect of being handed a 10-place grid penalty.
With Norris emerging as a surprise challenger to Verstappen's dominance this season, any drop could prove to be significant in what is becoming a frequent fight with McLaren for race wins.