Carl Pettersson shares the lead of the Shell Houston Open with Angel Cabrera after the first day.

Carl Pettersson and Angel Cabrera share the lead on 7 under after a weather-interrupted first round of the Shell Houston Open.

It is a welcome return to form for Pettersson after the Swede had missed his last two PGA Tour cuts in a row.

The 34-year-old got off to a storming start, birdieing five of his first eight holes, and his putter was on song all day.

“I got off to a great start, kept it going and got it to eight under,” Pettersson said.

Pettersson was 8 under with just two holes to play but bogeyed the 17th to drop back into a tie with Cabrera.

“It was a little disappointing bogeying 17, but I gave myself a great chance on 18 and didn’t make it. I’m happy with 7 under. I played really good, solid from the tee, hit good irons and putted really well.”

Americans Ricky Barnes and Jeff Maggert were shot behind the pair in a share of third, having returned 66s. Jim Herman is also on 6 under but has only completed 15 holes.

Play was suspended just after lunch because of a threat of lightning in the area.

Rain soaked the course throughout the afternoon and organisers later abandoned play for the day with only 51 players having completed the opening round.

Among the group who need to finish, or even start, their first round early on Friday are Phil Mickelson, Ernie Els, Louis Oosthiuzen and Charl Schwartzel.

South African performance

Els needs to win this event to qualify for a spot in the Masters, but the South African legend will need to sort out the putting problems he has suffered from for most of this season.

He is currently 1 under, but has only completed two holes of his first round.

Louis Oosthuizen is 2 under through three, while Schwartzel is 1 under, also only managing to complete three holes.

Zimbabwean Brendon de Jonge has completed five holes and is 2-under par.