American teen Nathan Chen left St. Paul with a piece of history but also with an injury that will keep him out of the world championships.

Chen, 16, who landed quadruple jumps in national record numbers and finished third last weekend during the U.S. Championships at Xcel Energy Center, suffered a left hip injury during the exhibition that ended the event. Chen underwent surgery Wednesday, and the 10-week recovery process will keep him out of both the junior and senior world championships.

Chen would have been competing at his first senior world championships. He would have been the favorite at junior worlds.

gOLF

Round of 66 leads on PGA Tour

Scott Brown birdied his last hole for a 30 on the front nine, a 6-under 66 and a share of the lead in the PGA Tour's Farmers Insurance Open in San Diego.

Brown played the South Course at Torrey Pines, which was 2½ strokes harder than the North Course, where Andrew Loupe shot his 66 in the opening round.

Second-ranked Park withdraws

•Second-ranked Inbee Park withdrew from the Pure Silk-Bahamas LPGA Classic because of back pain after she shot a 7-over 80 in the first round in Paradise Island, Bahamas. Michelle Wie had similar difficulty, shooting a 76 after being stung by a bee on her seventh hole. Seven players were tied for the lead after shooting 68.

NFL

USADA takes on Manning case

The U.S. Anti-Doping Agency, best known for nabbing Lance Armstrong, confirmed it is helping the NFL in its review of an Al Jazeera report linking Denver quarterback Peyton Manning to a clinic that deals in human-growth hormone.

That revelation didn't trouble Manning.

"It's garbage from the first day it came out and still garbage today," Manning said.

The key source in the story has recanted the details he provided.

NHL

Scott tells of league power play

John Scott, the journeyman enforcer voted into the NHL All-Star Game by fans, said the league tried to talk him out of playing.

According to Scott, in an account posted by The Players Tribune, someone with the NHL asked him, "Do you think this is something your kids would be proud of?"

Scott said that strengthened his resolve to play.

"While I may not deserve to be an NHL All-Star, I know I deserve to be the judge of what my kids will — and won't — be proud of me for," he wrote.

Wideman suspended for checking linesman

Calgary defenseman Dennis Wideman was suspended indefinitely pending a Tuesday hearing for checking and knocking down linesman Don Henderson on Wednesday night.

AROUND THE HORN

Baseball: The Tampa Bay Rays acquired outfielder Corey Dickerson from the Colorado Rockies for lefthanded reliever Jake McGee. Dickerson, 26, hit .304 last year in 65 games. McGee, 29, went 1-2 with a 2.41 ERA in 39 appearances in 2015.

College football: Missouri dismissed quarterback Maty Mauk from its team after three suspensions over the past four months. … Former USC assistant Justin Wilcox is coach Paul Chryst's choice to be the defensive coordinator at Wisconsin.

NEWS SERVICES