Roberto Castro and James Hahn / Getty Images Roberto Castro and James Hahn are tied at the top of the leaderboard on -14 under par, at the Humana Challenge at the conclusion of the second round at La Quinta, California. Roberto had a second round of -5 under par 67, to go with his opening round of 63. James equalled him with the same score in both rounds. Roberto had the lead alone at 16 under par , but sadly managed to bogeyed two of his last three holes,amazingly three-putting the par 4 ninth hole. He admitted he let it slip; "A couple slipped away there at the end, but yesterday I made a 50-footer on the last. Today, I felt like I hit a good putt and three-putted. So, that's stuff over 72 holes that's going to even out. I learned a lot last year, one of the best things that happened to me was making a lot of the cuts early in the year. I didn't have any big finishes, but I got to play four days and I got to learn pretty quickly. I got to play with some good players and watch what they do." James spoke about his Eagle at the par 5 fifth hole, after his drive went 310 yards; " It was a long-drive stat hole, so I kind of came out of my shoes a little bit. I didn't want to really overpower a 4-iron, I had a lot of adrenaline. Just hit it too good, hit the center of the green, landed it 220, rolled to the back. I could have hit it with a 6-iron and probably hit it within 2 feet. I read the break perfectly, broke about 2 feet straight down the hill" The chip rolled in for Eagle, then he birdied the par 5 sixth; "Any time you have back-to-back par 5s that are reachable, it's definitely something to look forward to, especially if the round's not going well. I'm just soaking it in, having a good time, any time that I play a good round, it feels good and makes me cherish the momentum a little bit more, because I know they're few and far between." There are three players tied in third spot at -13 under par, Darron Stiles, Scott Stallings and Richard H Lee. Phil Mickelson, the tournament winner in 2002 and 2004, had a second round -5 under par 67, but is nine shots behind the leaders, but really wants to make an impact on the West Coast; "The last two holes were the first time that I actually hit solid shots and my rhythm felt good and I made good swings. "I've been quick from the top, my rhythm has been off and I've hit a bunch of squirrelly shots. I made a lot of rusty mistakes. I really want to build some momentum here on the West Coast." Matt Kuchar, who was paired with Phil, had a second round -8 under par 64, matching the best round of the day, to get to 10 under par for the tournament. He's playing for the third straight week; "It certainly helps playing the last couple of weeks. My first week out at the Hyundai Tournament of Champions there was definitely some rust and lack of scoring. Even if you have been practicing, which I was, tournament play is just a little bit different." There is still a long way to go in this tournament, don't be surprised is Phil Mickelson does something special and really gets into contention.