MotoAmerica/Paul Carruthers

The two-day Dunlop Preseason Test got started yesterday at the Circuit of The Americas (COTA) with eight 50-minute sessions spread out over the Superbike and Supersport classes and it ended with some familiar names on top of the timesheets.

In the Motul Superbike class it was last year's COTA winner Toni Elias leading the way on his brand-new Suzuki GSX-R1000, the Spaniard besting teammate Roger Hayden by .556 in the final session with Hayden's best coming in the second of four sessions. The two factory Yamahas were next with Monster Energy/Graves Yamaha's Cameron Beaubier third fastest and just ahead of his teammate Josh Hayes.

Elias lapped at a best of 2:09.547 in the fourth and final session on Tuesday afternoon, just off his best from last year's Dunlop Preseason test. Beaubier, however, led last year's test with a 2:08.764 on a qualifying tire and Hayden earned pole position for last April's race with a 2:09.151, also with a qualifying tire.

Even though he ended up on top, Elias isn't completely happy with the front-end feel of his new GSX-R. The Moto2 World Champion and MotoGP race winner also had a crash early in the day.

"It has been a tough and difficult day," Elias said. "I don't feel comfortable yet, but it has been a perfect lap because I didn't make any mistakes, the lines... everything was perfect. Some days you feel much better, for example at the Thunderhill test I felt much better and thought I would be half a second faster but I make mistake a lot. Today, I don't feel comfortable but I had the perfect lap. The team worked hard and we improved, but I'm still missing some front information. With brakes, without brakes, it's the same feeling and we need to work on that."

  Action in COTA P1 With HJC BOBA FETT!!@hjc_helmets StarWars! @yoshimurasuzukiracing @team_suzuki_racing @suzukicycles @yoshimura_rd @beinsportsusa @motoamerica @ridedunlop @alpinestars @hjc_helmets @oakleymotorsports @gopro @clubracc @jstarautogroup @saludencasateam @hengruicimposites @live100_percent Picture: @brianjnelsonphoto A post shared by ToniElias24 (@tonielias24) on Mar 28, 2017 at 9:29pm PDT

Hayden, meanwhile, was fairly pleased with his day.

"The day went pretty good," Hayden said. "We got to go through a lot of stuff. It was nice to get a dry day in and get to learn more about the bike. We tried out a lot of things. Some were positive, some weren't, but we were pretty fast all day and that's good. We're always looking for a little more, but we were always toward the front every session and the bike, for me, is getting more comfortable. I'm looking forward to another good day tomorrow."

  The Yoshimura Suzuki GSX-R1000 Superbike riders heading out for the final pre-season test session. @suzukicycles @yoshimura_rd @motoamerica @cota_official @rogerhayden95 @tonielias24 #superbike #yoshimura A post shared by Yoshimura Suzuki Racing (@yoshimurasuzukiracing) on Mar 29, 2017 at 2:36pm PDT

The Superstock 1000 class was led on the first of two days of testing by last year's doubleheader winner Bobby Fong on the Latus Motors Racing Kawasaki ZX-10R. Fong turned in a 2:11.887 - 1.542 of a second slower than his qualifying time from last year's race.

KWR's Kyle Wyman was sixth overall today and fifth-fastest Superbike with Yamalube/Westby Racing's Mathew Scholtz seventh. Genuine Broaster Chicken Honda's Jake Gagne, Fly Racing/Motul/ADR Motorsports' Anthony David and Cycle World Suzuki's Hayden Gillim rounded out the top 10.

A winner from last year also came out on top in the Supersport class with Monster Energy/Yamalube/Y.E.S./Graves Yamaha's Garrett Gerloff coming out on top of the 19-strong Supersport/Superstock 600 contingent. Gerloff lapped at a best of 2:13.197, off his best from last year's test of 2:11.987 and his pole time from last year's COTA Supersport race of 2:11.999.

Like Elias, Gerloff also had a crash, though it was no fault of his own. The defending MotoAmerica Supersport Champion was following Moto3 test rider Gabriel Martinez-Abrego when the KTM-mounted Mexican crashed and took Gerloff with him.

Gerloff led M4 ECSTAR Suzuki's Valentin Debise by .402 of a second with his teammate JD Beach third and .764 of a second off his pace. KTM RC Cup Champion Brandon Paasch made his Supersport debut a good one, setting the fourth fastest time despite a crash in the third of four sessions. Rickdiculous Racing's Daytona Anderson rounded out the top five on day one.

Day One Lap Times

Supersport

1. Garrett Gerloff (Yamaha) 2:13.197
2. Valentin Debise (Suzuki) 2:13.599
3. JD Beach (Yamaha) 2:13.961
4. Brandon Paasch (Suzuki) 2:17.311
5. Daytona Anderson (Suzuki) 2:17.505
6. Nick McFadden (Suzuki) 2:17.728
7. Lucas Silva (Yamaha) 2:18.854
8. JC Camacho (Yamaha) 2:20.478
9. Brandon Cleland (Suzuki) 2:20.582
10. Jody Barry (Yamaha) 2:22.125

Superbike

1. Toni Elias (Suzuki) 2:09.547
2. Roger Hayden (Suzuki) 2:10.103
3. Cameron Beaubier (Yamaha) 2:10.643
4. Josh Hayes (Yamaha) 2:11.000
5. Bobby Fong (Kawasaki) 2:11.887
6. Kyle Wyman (Yamaha) 2:12.191
7. Mathew Scholtz (Yamaha) 2:12.339
8. Jake Gagne (Honda) 2:12.921
9. David Anthony (Kawasaki) 2:13.498
10. Hayden Gillim (Suzuki) 2:13.728