Weather has been a nightmare for this event as there was no golf played on Friday. The second round was slated to begin early on Saturday but the start was delayed three-and-a-half hours because bunkers at Tolcinasco Golf & Country Club were water-logged.
Play finally started but another thunderstorm rolled through and play was halted for another hour. Half of the field completed their second rounds and the remainder will return to the course at 1:30 a.m. ET Sunday to polish off the second round.
The tournament has been reduced to 54 holes and the third round is scheduled to begin at 5:15 a.m. Sunday in threesomes off both the first and 10th tees.
First-round co-leaders Gregory Havret (69) and Mark Roe (69) joined this year's dunhill championship winner Marcel Siem (66) in a share of third place at 11-under-par 133.
Ian Poulter, a two-time winner of this event, posted a second-round 66 and is alone in sixth at minus-10.
Cabrera started on the back nine in the second round and tallied four birdies over his first nine holes. He eagled the par-5 first for the second consecutive round and birdied the second to get to the top of the leaderboard.
At the seventh, Cabrera knocked his approach to 7 feet. He missed the birdie putt but collected a birdie at No. 8 to go one clear of the field. Cabrera, one of the longest drivers on the European Tour, had a middle-iron into the par-5 ninth green and hit his approach to 6 feet.
Then the storms rolled in and the horn sounded stopping play.
When Cabrera came back, he missed the eagle putt but tapped in for birdie and his 63, which would have been a course record had the golfers not been playing under preferred lies.
'It was a very good round,' said Cabrera, who is in search of his third win on the European circuit. 'I hope it continues tomorrow. Overall it was a good round and I think it was an advantage being a big hitter after all the rain. Tomorrow, see what happens.'
McDowell tallied three birdies on each of his nines for a bogey-free 66.
'This is the first time I have ever felt this good about my game,' said McDowell, who won the 2002 Scandinavian Masters. 'I am playing as well now as I ever have in my life. Worked hard on my short game and this year it feels where it needs to be to compete on this level. It would have been easy to think I was on the wrong path but I knew I was in the right direction and I have been playing well now for weeks.'
Robert Coles (67) and Mark Foster (69) are in the clubhouse at 9-under-par 135. Martin Maritz is 9 under par through 12 holes of his second round.