Henderson finishes inches behind race winner Greipel in the opening stage
Team Sky's Greg Henderson finished fifth on the opening stage of the Tour Down Under in Australia to follow his victory in Sunday's warm-up race.
The New Zealander was given the same time as winner André Greipel from Germany, after a bunch sprint at the finish of the 141km stage to Tanunda.
Belgian duo Gert Steegmans and Jurgen Roelandts were second and third.
Seven-time Tour de France winner Lance Armstrong finished in the main bunch, in 46th spot.
The finish was always going to be contested by the sprinters, and Henderson was in the frame to complete what would have been a remarkable double victory for the new British cycling outfit Team Sky.
But Greipel gained revenge over Henderson, who pushed him into third place in Sunday's Cancer Council Helpline Classic in Adelaide.
Henderson admitted a split-second hesitation cost him the chance of a victory in the first major race for his fledgling team.
"When CJ Sutton went I just wasn't sure exactly when to go," he said. "I slipped off the wheel, but got caught on the wrong side.
"I stalled just a little bit and lost some momentum. But Greipel was too fast for everyone.
"This was our first road race, and I didn't feel as powerful as I normally do. But it was a good outing, the team did a good job again by managing to take control at the front.
"We came to the front about 2km out, going past HTC-Columbia, then kind of joining forces with them.
"Liquigas also got involved, coming up the inside. Somehow they found some space against the cars. Then, at about 400m out, CJ took off - it was perfect, but I just wasn't fast enough.
"Greipel had a comfortable seat the whole time on my wheel, or maybe one behind me, but when he jumped and came past I just went, Woah! He did well."
Following an early crash, which brought down nearly half the 132-strong field, the early pace was set by three relatively unknowns in Australia's Tim Roe, Swiss Martin Kohler and France's Biel Kadri.
The trio were allowed to open up a lead approaching 10 minutes before the peloton began to reel them in.
They were eventually caught inside the final 20km, prompting Garmin's Matt Wilson to make an instant break for home. He, too, was soon brought back to set up the bunch sprint.
Armstrong was pleased with his performance, in his first major race his own RadioShack team.
"This is a good start," said the American. "It's awfully hard with these particular stages to make up time. All I want to do is to stay out of trouble, no crashes, no injuries and no illnesses."
Wednesday's second stage is a 133.5km ride from Gawler to Hahndorf in the Adelaide Hills.
Tour Down Under - Stage One result:
1 A Greipel (Ger) HTC-Columbia, 3 hour, 15 minutes, 30 seconds
2 G Steegmans (Bel) RadioShack, same time
3 J Roelandts (Bel) Omega Pharma Lotto, same time
4 D Wyss (Swi) Team BMC
5 G Henderson (NZ) Team Sky, same time
6 B Cooke (Aus) Saxo Bank, same time
7 G Brown (Aus) Rabobank, same time
8 R McEwen (Aus) Katusha, same time
9 J Rojas (Spn) Caisse D'Espargne, same time
10 V Dmitriyev (Kaz) Astana, same time
25 C Sutton (Aus) Team Sky, same time
46 L Armstrong (US) RadioShack, same time
48 M Hayman (Aus) Team Sky, same time