Play was suspended for the evening due to darkness. The second round will resume at 8:00 A.M. local time Saturday with 69 players still needing to complete their rounds. The tournament is trying to catch up from Thursday's rain delay that lasted over three hours and the players are now battling strong winds.
Arruti finished his opening round of 66 Thursday. He began his second round Friday on the back nine of the Santo da Serra Golf Club and dropped a shot with a bogey at the par-5 11th, his second.
The former Spanish Open Amateur champion recovered that stroke with a birdie at the par-4 14th. However, he faltered again at the next with his second bogey of the round.
Arruti dropped another stroke with a bogey at the par-3 17th. Around the turn, Arruti birdied the second and stands at 1-over for his round through 12 holes.
Sherborne began his round two strokes behind Arruti and parred his first two holes then birdied the par-4 12th to grab a share of the lead.
The Englishman then parred three consecutive holes and is 5-under through six holes of his second round.
Andrew Marshall (70), Henrik Stenson (69) and Bradley Dredge (72) are tied for third place at 3-under-par 141 with each having completed their rounds. Alberto Binaghi is also 3-under par but has completed just three holes of his second round.
Dredge traded three birdies and three bogeys over his round of even-par 72.
'It is very difficult out there and the wind is really gusting,' said Dredge. 'The hardest thing is club selection. The greens are not very big and you have distinctive tiers. On the last, I hit the wrong tier and just couldn't get the first putt close.'
Van Phillips (74) and Marcello Santi (73) are one shot back at 2-under-par 142. Marcel Siem shared seventh place with Phillips and Santi at minus-2 and he is through 12 holes.