May 02-05
Lake Merced Golf Club, Daly City, California
$1,800,000
Round 1, Round 3, Round 4

Charley Hull is two shots off the pace on a crowded leaderboard at the halfway stage of the LPGA Mediheal Championship in California.

England's 23-year-old, who carded an opening 69, fired three birdies and a solitary bogey to produce a second-round 70 and sit in a tie for fourth on five under.

South Korea's So Yeon Ryu also shot a two-under 70 - mixing three birdies with just the one dropped shot - to sit alone at the top of the leaderboard on seven under, one shot ahead of compatriot Sei Young Kim and American Ryann O'Toole.

Kim signed for a blemish-free 66 at Lake Merced, while O'Toole set the 18-hole tournament record with a bogey-free seven-under 65, a score matched by He Yong Choi who makes up the five-strong pack in fourth alongside Hull.

"I like more challenging golf courses, harder, like, firmer, longer, faster," O'Toole told the LPGA Tour.

"To me, it's more of a shot-making golf course. And I think it doesn't put the pressure on, like oh, it's a birdie fest. I don't think that's ever been really my style of golf. So, I think when you're patient and you're rewarded for pars, I feel like that eases me a bit more versus if you're not making birdies on every hole, you feel like you're behind."

Player Notes

Rolex Rankings No. 9 So Yeon Ryu (67-70)

Ryu's 137 is the lowest 36-hole of her 2019 LPGA Tour season; she previously shot 139 at the LOTTE Championship, where she finished T3

She hit 11 of 14 fairways and 12 of 18 greens

Ryu is in her eighth season on the LPGA Tour; she has six career victories, including major titles at the 2011 U.S. Women's Open (as a non-Member) and the 2017 ANA Inspiration

This is Ryu's seventh event of the 2019 LPGA Tour season; she finished T9 at the LOTTE Championship and T19 at the HUGEL-AIR PREMIA LA Open

At the inaugural LPGA MEDIHEAL Championship in 2018, she finished T18

At the 2016 Swinging Skirts LPGA Classic, a separate LPGA event held at Lake Merced Golf Club, Ryu finished solo fifth

She was the 2012 Louise Suggs Rolex Rookie of the Year

Rolex Rankings No. 61 Ryann O'Toole (73-65)

O'Toole's second-round 65 sets the tournament single-round scoring record, along with a 65 today from sponsor invite He Yong Choi

Her 65 is the lowest round of her 2019 LPGA Tour season; she previously shot 68 three times, most recently in the first round of the LOTTE Championship

Her 65 is also tied for the second-lowest round of her LPGA Tour career; she shot a 63 in the third round of the 2018 Evian Championship and has five other 65s, most recently in the final round of the 2018 Walmart NW Arkansas Championship presented by P&G 

She hit 11 of 14 fairways and 17 of 18 greens with seven birdies

O'Toole is in her ninth season on the LPGA Tour; her best finish is third at the 2018 Swinging Skirts LPGA Taiwan Championship presented by CTBC

This is O'Toole's ninth event of the 2019 LPGA Tour season; her best finish is T36 at the Kia Classic

At the inaugural LPGA MEDIHEAL Championship in 2018, she finished T11

O'Toole played in the 2014-2016 Swinging Skirts LPGA Classics, a separate LPGA event held at Lake Merced Golf Club, finishing T59 (2014), T33 (2015) and T15 (2016)

She represented the United States at the 2011 Solheim Cup, posting a 2-0-2 record

She is a 2009 graduate of UCLA with a degree in Sociology

Rolex Rankings No. 15 Sei Young Kim (72-66)

Kim's second-round 66 is tied for the lowest round of her 2019 LPGA Tour season; she also shot a 66 in the final round of last week's HUGEL-AIR PREMIA LA Open

She hit 11 of 14 fairways and 15 of 18 greens

Kim is in her fifth season on the LPGA Tour; she has seven career victories, most recently at the 2018 Thornberry Creek LPGA Classic, where she set the LPGA's 72-hole scoring record at 31-under 257

This is Kim's eighth event of the 2019 LPGA Tour season; she finished second at last week's HUGEL-AIR PREMIA LA Open

At the inaugural LPGA MEDIHEAL Championship in 2018, she finished T37

At the 2015 Swinging Skirts LPGA Classic, a separate LPGA event held at Lake Merced Golf Club, Kim finished T9

Kim represented the Republic of Korea at the 2016 Summer Olympics in Brazil, where she finished T25

She was the 2015 Louise Suggs Rolex Rookie of the Year

Tournament Scoring Records

18 holes: 65 (-7) Ryann O'Toole, second round, 2019; He Yong Choi, second round, 2019
36 holes: 135 (-9), Jessica Korda, 2018
54 holes: 205 (-11), Lydia Ko, 2018
72 holes: 276 (-12), Lydia Ko, 2018; Minjee Lee, 2018