World number one Rory McIlroy shut out noisy distractions to move to within two shots of leader Peter Hanson on day two of the BMW Masters golf.
Despite constant sounds of nearby building construction, sirens and even fireworks, along with the distraction of on-course mobile phones, McIlroy did not drop a shot in a round of seven-under-par 65 to move into second place on 12 under par.
Sweden's Hanson, McIlroy's double-winning Ryder Cup team-mate, posted an eight-under par 64 to lead the $7-million event by two strokes on 14 under par on the Lake Malaren course.
Hanson started his round with a first-hole bogey before getting eight birdies in 16 holes.
"It's amazing how many good rounds come together after a bogey on the first," he told reporters.
"After starting with a bogey I got it straight back with a birdie on three."
Hanson, the world number 25, captured a fifth European Tour victory a fortnight before the Ryder Cup in winning the KLM Open at Hilversum.
"I've been fighting really hard with my game after the Ryder Cup to get back the motivation because it is hard after such a big week and you prepare for so long to try and qualify for the team," Hanson, 35, added.
Hanson, however, will have to fend off McIlroy over the closing two rounds. Last year, the Irish star captured the Shanghai Masters exhibition match on the same course and he has won four times this season, including a second Major championship title.
"The more you put yourself in this position, the more comfortable you become with it," McIlroy said.
"I like the fact that most weeks I tee it up, I can get myself in contention."
Sweden's Robert Karlsson shot a 64 to move into third place on nine under par.
Garrigus leaves Tiger trailing in his wake
Robert Garrigus left Tiger Woods trailing five strokes behind after a second successive 64 at the CIMB Classic at The Mines in hot and humid Malaysia yesterday.
The big-hitting American, three times a runner-up on the PGA Tour this season, reached halfway 14 under par and two in front of South African Jbe Kruger as Woods (below) moved up only from seventh to fifth with a 67.
"No disrespect to anybody on the PGA Tour -- they're all great players -- but I feel like I can beat anybody in the world," said 34-year-old Garrigus, currently 43rd in the rankings and with only one career victory to his name.
After pars on the first six holes he birdied six of the following seven and then made two more before dropping his only shot of the day on the 447-yard last.
Woods has had 13 birdies in his first two rounds, but also two bogeys each day.
"I had a good enough lie that I knew I could get it out and give myself a putt," he said.
"It is playing where it could be had out there. Guys are shooting good scores, a bunch of 65s and lower. You just can't keep passive -- you have to be aggressive."