Lundberg added a 68 to his opening 67 at Diamond Country Club to finish nine under par, one shot ahead of playing partner Lee Slattery.
England’s Slattery shrugged off a shoulder injury caused by a soft pillow to move into contention for a second European Tour title.
Slattery, 35, carded an eagle, five birdies and one bogey to return an impressive 66 at Diamond Country Club.
“The bed this week is quite hard, which I usually like, but the pillow’s soft, which I’m not so keen on,” said Slattery, who won the Madrid Masters in 2011.
“When I got out of bed this morning I did a few stretches and felt something tweak in my shoulder.
“It felt a bit sore, then it got progressively worse and on the way in on the bus I wasn’t even sure whether or not I’d actually be able to play today.
“But I went to see the physio as soon as I got to the course and he managed to loosen it up for me. ”
Paraguay’s Fabrizio Zanotti is two off the pace on seven under after a 68, with Korea’s Sihwan Kim six under after also shooting 68 and defending champion Joost Luiten another stroke back following a flawless 67.
lNaas’ Jack Hume is leading a strong Irish charge at the St Andrews Links Trophy as the 20-year-old shot a four under 67 at the New Course at St Andrews to sit tied ninth going into today’s second round.
The West of Ireland champion is seven shots off the pace after France’s Gregorie Schoeb hit a sublime course record with an 11 under round of 60.
Eugene Smith, is the next best placed Irishman just one shot behind Hume.
- Laytown and Bettystown’s Frank Flynn is the best placed Irishman heading into today’s final round at the European Mid-Amateur Championship in Bulgaria.
However, Flynn goes into today’s final round with no real hopes of challenging for a top 20 place, after a disastrous round of 81 yesterday saw him plummet down the field to sit tied in 57th position.
A catastrophic triple bogey at the 5th, quickly followed by a bogey at the next and another at the turn, ruined Flynn’s hopes.
The Meath’s man’s fortunes failed to improve on the back nine, where further bogeys at holes 10, 12, 14 and 15 saw him finish 11 over for the tournament.
Germany’s Alexander Koller continues to head the field eight under par, just one shot ahead of Australia’s Richard Heath.