Coming after the first round 80, it was a relief of sorts for the 28-year-old Indian, playing his Rookie season on the PGA Tour.
Lahiri started on the 10th and had just one birdie and one bogey on the back nine of the Torrey Pines (North) and then added two birdies on the second nine. That gave him a 70, but he still missed the cut by ample distance.
It was Lahiri's debut at the Torrey Pines, but also missing out on the cut this week were defending champion and World No. 2, Jason Day (72-76), Rickie Fowler (73-71), Justin Rose (71-73), which meant three of the World's Top-10 stars had missed the cut and so did Phil Mickelson (69-76).
However, coming into form at the right time was KJ Choi, who shared the lead with Gary Woodland as both players 68-67 in the two rounds. Trailing them by one going into the weekend was Dustin Johnson, who made a risky escape on of the one wild tee shots he hit. Still he was only one behind Choi and Woodland.
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Choi was a bit of a surprise, having not won on the PGA TOUR in nearly five years. The 45-year-old South Korean shot his 67 on the North Course.
In his second round Lahiri went through a bogey-free performance with three birdies to boot. He hit well and gave himself decent chances. He missed a seven-footer for birdie on par-5 18th, which was his ninth hole, but otherwise birdied the other three Par-5s to card 69 and bring his total to three-under 141 and be placed tied 46th, a massive improvement on his first round placing of tied 80th.
Lovemark played 27 holes on Friday. He completed a 5-under 67 in the first and added a 66 in the second in the event that has been hit by a long rain delay on Thursday.
Lovemark, who is still winless on the PGA Tour, has birdied seven of the eight pars in two rounds.
Vegas, whose last PGA Tour win came in 2011, shot 64-69 and he endured a little over 30 holes, after picking action midway from sixth hole.
None of the players in the afternoon wave finished the round, with top-ranked Jason Day at 5-under and facing a 15-foot birdie putt on the par-5 11th when play resumes. Brian Stuard, the overnight leader after a 64 on Thursday, was a stroke behind the leaders at 10 under with six holes left. Harold Varner III was 8 under after a 67.