He’s also at the top of the Greenbrier Classic leaderboard.

Playing on a late sponsor exemption, the 30-year-old double heart transplant recipient shot a 7-under-par 63 yesterday in White Sulphur Springs, W.Va., to share the first-round lead with rookie Matt Every in the inaugural tournament.

Compton spent eight straight days doing yard work at home in Miami before he got the call Saturday to play in the tournament. He’s making the most of his late invite, overcoming a slow start with nine birdies on the Old White course.

“You know, some guys miss six, seven cuts in a row and then win,’’ Compton said. “I know I’m a good player, and I have a lot of the adversity in front of me with the game and health. But I always feel like if I stick in there and keep trying, something eventually good is going to happen.’’

Nearly all of the field hadn’t played the course before this week, but it wasn’t a detriment — 24 were at 4 under or better.

Compton was diagnosed with viral cardiomyopathy at age 9. The disease inflames the heart and leaves it unable to pump as hard as it needs to. His first transplant came three years later and another in 2008.

He didn’t think he’d play golf again and even sold his equipment after the second transplant. But his health improved quickly and he returned to the game within weeks.

This season he’s made four cuts in seven starts.

LPGA — Yani Tseng shot a 4-under 68 in the opening round of the Women’s British Open at Royal Birkdale in Southport, England, and is tied for the lead as she pursues her third major championship.

The rising star from Taiwan shot a bogey-free round that included a birdie and an eagle on the two finishing holes, putting her in a tie for the lead with Australian Katherine Hull.

Hull was among the last players on the course and also made an eagle on the 18th hole to join Tseng.

Champions — Bruce Vaughan took advantage of cool morning conditions with an opening-round 66 to take a two-shot lead in the first round of the US Senior Open in Sammamish, Wash.

Less than a week after finishing in a tie for 20th at the Senior British Open, Vaughan picked up where he left off with birdies on the 16th and 18th holes. Vaughan then birdied the second, third, and sixth holes on his back nine, before bogeying the par-3 ninth.

European — England’s David Howell showed a long overdue return to form as he shot a 7-under 64 to take the first-round lead at the Irish Open in Killarney, Ireland.

The 35-year-old former Ryder Cup player had slumped to 479th in the world after reaching No. 9 in 2006, when he won the PGA Championship.

Ouimet Memorial — As a goaltender in the NHL for five teams, Mike Dunham finished his career with 141 wins. The 38-year-old from Concord Country Club nearly matched that number through two rounds of the 43d Ouimet Memorial Tournament, his 143 total giving him a two-shot lead.

One day after opening with a 72 on the Oaks Course at The International in Bolton, Dunham — who was drafted by the Devils and also played for Nashville, Atlanta, and both New York teams — shot a 71 on the Pines Course and leads Frank Vana Jr. (73-72), Ryan Riley (70-75), and Chris Congdon (72-73).

Jack Kearney (69-70) leads the Eddie Lowery Division (ages 50 and higher) through two rounds by four shots.

Mass. Junior Amateur — Andy Mai, a 17-year-old who plays at The Ranch Golf Club, birdied the final two holes of regulation to get into a three-man playoff, then holed a 5-foot birdie putt on the second playoff hole at Foxborough Country Club to win the state’s top junior tournament. Mai had a final-round 71 and a three-round total of even-par 216, and joined Dan Slavin (72) and Jack Whelan (69) in the playoff.

John Beadle, playing on his home course, won the pre-junior division (ages 14-15) by four shots, shooting a final-round 75. Nick Rodriguez (74) was second. Steven Dilisio, a 12-year-old from Swampscott, successfully defended his title in the boys division (ages 13 and under), shooting a final-round 79 to win by five strokes over Andrew Flynn (81).

WGAM Junior Championship — Isabel Southard of Sharon won by eight shots, shooting 74-78 to beat Mary Mulcahy (74-86) at Tedesco CC in Marblehead. Katherine Fortin (81-78) of Weston won the silver flight, while Angela Garvin (71) of Feeding Hills won the mite championship and Hannah Ghelfi (76) of East Falmouth the junior/junior division, both of which consisted of two nine-hole rounds.

Big I Junior Classic — Megan Khang of Rockland shot a 75 and is tied for sixth, eight shots behind the leader, heading into the final round in Chesterfield, N.J. In the boys division, West Yarmouth’s Joshua Moore had one of the day’s best scores, a 2-under 69, and is tied for fifth, six shots off the lead.

Michael Whitmer of the Globe staff contributed to this report.