Phil Mickelson tees off from the first hole during the second round of the St. Jude Classic golf tournament at TPC Southwind on Friday, June 8, 2018, in Memphis, Tenn. (Brandon Dill/The Commercial Appeal via AP)
Phil Mickelson tees off from the first hole during the second round of the St. Jude Classic golf tournament at TPC Southwind on Friday, June 8, 2018, in Memphis, Tenn. (Brandon Dill/The Commercial Appeal via AP) Credit: Brandon Dill

Memphis, Tenn. — Dustin Johnson wants to sharpen his game for the U.S. Open. Moving back to No. 1 in the world would just be a nice bonus because the only way he can do that before Shinnecock Hills is by winning the St. Jude Classic.

Johnson knows what he wants.

“I just want to win,” Johnson said.

Johnson shot 7-under 63 for his lowest round this year and grabbed a one-stroke lead on Friday after 36 holes at the St. Jude Classic. He had four of his seven birdies and an eagle on his back nine for a 29 and finished with a 10-under 130 total.

Ryan Blaum and Andrew Putnam each shot 64 and were tied second, and C.T. Pan (65) and Wesley Bryan (66) followed at 8 under.

Brandt Snedeker shot his best round this year with a 62 that was one stroke off the course record. He was at 7 under.

Irishman Seamus Power, who came in with a one-stroke lead, shot a 69 to reach 6 under. Defending U.S. Open champ Brooks Koepka (69) was at 5 under, and Phil Mickelson (70) was at 4 under.

Two-time defending champ Daniel Berger (71-141) missed the cut.

Johnson spent 64 weeks atop the world ranking until Justin Thomas made the cut at the Players Championship in May and grabbed the top spot to himself. Johnson said the course and not playing only four times in April and May combined prompted his decision to play here before going to Shinnecock Hills.

Johnson also had a 63 in the second round of the World Golf Championships-HSBC last October to kick off this season. He won the Tournament of Champions in January and followed with a tie for second at Pebble Beach in February. He has three top 10s and tied for eighth last week at Memorial.

Nordqvist Shares LPGA lead

Galloway, n.j. — Two-time champion Anna Nordqvist shot a 5-under 66 on Friday for a share of the first-round lead with Laura Diaz and Celine Herbin in the ShopRite LPGA Classic.

Nordqvist won the 54-hole event in 2015 and 2016 on Stockton Seaview’s Bay Course and finished second last year. Teeing off on Friday in the afternoon when the wind was stronger, the 30-year-old Swede closed her bogey-free round with a birdie on the par-5 ninth.

Langer Ahead in Iowa

Des Moines, Iowa — Bernhard Langer returned for a three-week break to shoot an 8-under 64 and take the first-round lead on Friday in the PGA Tour Champions’ Principal Charity Classic.

Langer closed the bogey-free round with a 12-foot birdie putt on the par-4 18th at Wakonda Club. The 60-year-old German star took the brief break in part to attend his son’s high school graduation.

U.S. Up at Curtis Cup

Scarsdale, n.y. — Lilia Vu and Kristen Gillman led the United States to a 4-2 lead over Britain and Ireland in the Curtis Cup on Friday at Quaker Ridge.

Vu and Gillman beat Alice Hewson and Lily May Humphreys, 4 and 3, in the morning four-ball matches, then joined other partners in the afternoon foursomes for two more victories. Vu and Jennifer Kupcho edged Hewson and India Clyburn, 2 up; and Gillman and Lauren Stephenson beat Paula Grant and Humphreys, 4 and 2.

Olivia Mehaffey and Sophie Lamb earned 1 1/2 points for Britain and Ireland. They halved with Kupcho and 15-year-old Lucy Li in the morning, and beat Mariel Galdiano and Andrea Lee 3 and 2.

Also in the morning, Stephenson and Sophia Schubert halved with Grant and Shannon McWilliam.

The U.S. leads the series 28-8-3. It is trying to regain the cup after falling 11 1/2-8 1/2 in 2016 at Dun Laoghaire in Ireland.

After another day of four-ball and foursomes matches, the event will close Sunday with singles.