Sam Burns hits 61 to take one-shot halfway lead

Shane Lowry shot a second round of 67 to lie seven shots off the lead.

Sam Burns watches his shot from the 17th tee at the Nicklaus Tournament Course at PGA West during the second round of the American Express tournament. Pic: Ryan Sun/AP

Sam Burns shot a second round 61 as he took a one-shot halfway lead at The American Express tournament in California.

Burns’ career-low round leaves him on 17 under par, one shot ahead of fellow American Michael Kim with South Korean’s KH Lee and American amateur Nick Dunlap a further shot back.