Pagenaud got held up on his earlier qualifying sim, but his second run did the job, a 59.7864sec, equated to 107.543mph, and lifted him half a tenth of a second ahead of Iowa-winning teammate Helio Castroenves.

Josef Newgarden was third, one-tenth behind Castroneves and seven-hundredths ahead of Will Power who completed the Penske 1-2-3-4 although he lost time with a trip into the Turn 3 escape road.

Ryan Hunter-Reay was fastest Honda driver in fifth for Andretti Autosport, with Graham Rahal’s Rahal Letterman Lanigan Racing-Honda in sixth. Seventh and eighth for Alexander Rossi and Takuma Sato (who spun and stalled in a runoff area) backed up Hunter-Reay’s performance and indicated Andretti Autosport had made a setup breakthrough overnight.

Local hero James Hinchcliffe was ninth fastest for Schmidt Peterson Motorsports-Honda ahead of the impressive Carlos Munoz in the AJ Foyt Racing-Chevrolet.

Chip Ganassi Racing-Honda’s lead runner was Tony Kanaan in fifth, as last year’s polesitter Scott Dixon languished in 17th, just ahead of teammates Charlie Kimball and Max Chilton.

Sebastian Saavedra was an impressive 15^th, in his only IndyCar outing this year aside from the Indy 500 venture with Juncos Racing. The 27-year-old Colombian, who has replaced Mikhail Aleshin in SPM’s #7 for this weekend, was only 0.83sec off top spot and under four-tenths slower than teammate Hinchcliffe.

JR Hildebrand’s session ended early after his Ed Carpenter Racing-Chevrolet made contact with a wall.

Toronto FP3

Cla	#	Driver	Laps	Time	Gap	Interval	Mph
1	1	Simon Pagenaud	18	59.7864			107.543
2	3	Helio Castroneves	17	59.8255	0.0391	0.0391	107.473
3	2	Josef Newgarden	24	59.8828	0.0964	0.0573	107.370
4	12	Will Power	21	59.9529	0.1665	0.0701	107.244
5	28	Ryan Hunter-Reay	19	59.9765	0.1901	0.0236	107.202
6	15	Graham Rahal	25	59.9844	0.1980	0.0079	107.188
7	98	Alexander Rossi	24	1'00.1751	0.3887	0.1907	106.848
8	26	Takuma Sato	24	1'00.1777	0.3913	0.0026	106.844
9	5	James Hinchcliffe	23	1'00.2390	0.4526	0.0613	106.735
10	14	Carlos Munoz	22	1'00.3290	0.5426	0.0900	106.576
11	10	Tony Kanaan	21	1'00.3859	0.5995	0.0569	106.475
12	20	Spencer Pigot	23	1'00.4025	0.6161	0.0166	106.446
13	18	Esteban Gutierrez	26	1'00.5424	0.7560	0.1399	106.200
14	27	Marco Andretti	20	1'00.5869	0.8005	0.0445	106.122
15	7	Sebastian Saavedra	21	1'00.6194	0.8330	0.0325	106.065
16	19	Ed Jones	22	1'00.6742	0.8878	0.0548	105.969
17	9	Scott Dixon	20	1'00.6752	0.8888	0.0010	105.968
18	83	Charlie Kimball	23	1'00.7340	0.9476	0.0588	105.865
19	8	Max Chilton	25	1'00.8337	1.0473	0.0997	105.691
20	21	J.R. Hildebrand	11	1'01.0371	1.2507	0.2034	105.339
21	4	Conor Daly	20	1'01.1741	1.3877	0.1370	105.103