Ryan Hunter-Reay

DETROIT -- A refreshing night's sleep -- his first since winning the Indianapolis 500 Mile Race on May 25 -- was just what Ryan Hunter-Reay the competitor needed.

Hunter-Reay topped the time chart in the opening 45-minute practice session for the Chevrolet Indy Dual in Detroit presented by Quicken Loans with a lap of 1 minute, 18.8595 seconds on the 2.36-mile, 13-turn temporary street circuit on Belle Isle.

His best lap (10th of 12 total) in the No. 28 DHL car for Andretti Autosport was less than a second off the track record in its current configuration set by Dario Franchitti last year in qualifications for Race 1.

Click it: Practice 1 results

Twenty-two drivers totaled 354 laps. A second session is scheduled for 3:20 p.m. (ET). The three rounds of qualifications, including the Firestone Fast Six to determine the Verizon P1 Award winner, are scheduled for 8:35 a.m. (ET) May 31. The 70-lap races are at 3:30 p.m. May 31 and June 1 -- both on ABC.

Justin Wilson, who won the 2008 race, was second quick (1:18.8816) in the No. 19 Dale Coyne Racing car and Indy 500 runner-up Helio Castroneves was third (1:18.8977) in the No. 3 Hitachi Team Penske car. Castroneves won his first Indy car race on Belle Isle in 2000.

Simon Pagenaud, who earned his maiden Verizon IndyCar Series race victory last year in Race 2, was fourth in the session (1:19.1652) in the No. 77 Schmidt Peterson Hamilton Motorsports entry, while Tony Kanaan was fifth (1:19.2083) in the No. 10 Target Chip Ganassi Racing car. Mike Conway, who won Race 1 last year, was sixth quick (1:19.2453) in the No. 20 Fuzzy's Ultra Premium Vodka car for Ed Carpenter Racing.

Hunter-Reay arrived in Detroit on May 29 after an Indy 500 Victory Tour to New York and Fort Worth, Texas, where the Verizon IndyCar Series will contest the Firestone 600 on June 7 at Texas Motor Speedway. He'll be a guest on "The Late Show with David Letterman" on June 2.

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Detroit Practice 1 Infographic