Lee Westwood is one shot off the lead in his bid for a fourth Scandinavian Masters title, with French European Tour rookies Clement Berardo and Sebastien Gros two of six players tied for first after the opening round.
Westwood claimed his third win at the Bro Hof Slott Golf Club in Stockholm in 2012 and would have been the sole player at the top of the leaderboard if not for bogeys at eight and 13.
The former world number one carded a four-under-par 68 but is looking up at Berardo, Gros, Andrew Johnston, Scott Henry, Marc Warren and Florian Fritsch.
That quintet all finished the day five under after posting 67s, while Westwood is among eight players a stroke off the lead.
Westwood said: "Obviously it's nice to come back to places you've won on before, but I'm more happy with the fact that I'm starting to hit the ball really well and seeing the flight on the shots that I like and on the greens I rolled the ball really well."
There are 12 players tied for 15th and two shots off the pace, with defending champion Alexander Noren among them.
Thomas Bjorn is also three under after his first round but would be level with Westwood had an excellent chip not rolled around the 16th hole.
World number six Henrik Stenson, a runner-up in 2005, could only manage par as he aims to win the tournament for the first time.