Scott Dixon set the fastest lap in the first practice session for the Honda Indy Toronto Friday morning, with an elapsed time of 1 minute, 1.0723 seconds around the 11-Turn, 1.786-mile street circuit.
Dixon led Josef Newgarden by 0.1415 seconds.
Dixon’s teammate Felix Rosenqvist finished the session third fastest, with a time of 1 minute, 1.2395 seconds, with Alexander Rossi finishing fourth fastest with a time of 1 minute, 1.3843 seconds.
Indianapolis 500 winner Simon Pagenaud finished the session fifth fastest with an elapsed time of 1 minute, 1.4969 seconds.
The 45-minute session saw the red flag come out three separate times, all for drivers losing control in Turn 11 and spinning on the front straightaway.
Will Power was the first to do so, 17 minutes into the session, with teammate Newgarden following suit approximately ten minutes later. Takuma Sato was the final driver to fall victim to Turn 11, spinning with 12 minutes remaining, and almost collecting Marco Andretti.
All three drivers would be assessed five-minute penalties for their spins.
Practice 2 for the Honda Indy Toronto takes place later this afternoon, with live streaming of the session starting at 3:15 p.m. ET on NBC Sports Gold.