Jordan Spieth fired a five-under 66 to shoot into a share of the lead before rain suspended play at the AT&T National on Friday. The 19-year-old hit every green in regulation to extend his bogey-free streak to 29 holes on a difficult Congressional Country Club course, having completed his second round. He joins overnight leader Roberto Castro (69) at the top of the leaderboard at seven under for the tournament. South Korea&aposs DH Lee also shot a 66 to grab a share of third place with Argentine Andres Romero at five under. Romero is four under through 13 holes and will finish his second round when play resumes on Saturday. Spieth starred in going through bogey-free as he holed five birdies on the front nine, and he believes nerves had no affect on him. “You start to feel nerves when you&aposre at the top of the leaderboard and I was able to channel them nicely,” he said. “It didn&apost affect my ball striking and I had a few putts that just stayed out and I&aposll be looking for them to fall tomorrow. There are plenty of birdies to be made out there.” American duo Cameron Tringale (67) and James Driscoll (69) are tied for fifth at four under with countrymen Gary Woodland (69), Stewart Cink (69), Russell Henley (70) and Swede David Lingmerth (65) tied at three-under. In what is proving to be a tough week for the Australians, Jason Day is in a tie for 46th after struggling to a two-over 72 on Friday, sitting at one over for the tournament. Adam Scott (71), Matt Jones (72) and Stuart Appleby (74) are a shot further back in a tie for 57th with Aaron Baddeley (72) and Mark Leishman (71) unlikely to make the cut with both battling at four over overall. John Senden is at two over and through 13 holes in his second round.