Reuters Sports News Summary

Following is a summary of current sports news briefs. British runner Sharp received death threats for Semenya comments

British runner Lynsey Sharp said on Friday she had received death threats for past comments about South African Caster Semenya's "advantage" in middle distance races. "I've had death threats. I've had threats against my family and that's not a position I want to be in," the 28-year-old told the BBC after finishing ninth behind winner Semenya in Friday's Diamond League 800m race in Doha. 49ers offensive tackle Davis seeks reinstatement from retirement

Nearly three years after he retired from the NFL over concussion concerns, San Francisco 49ers offensive tackle Anthony Davis has requested reinstatement to the league in a letter to commissioner Roger Goodell, Pro Football Talk reported. Davis, 29, played 72 games with the 49ers from 2010-16, but saw action in just one contest in his final season. The former first-round draft pick (11th overall) out of Rutgers missed the entire 2015 season after sustaining a concussion in 2014. Dufner matches career-low round as McIlroy stumbles at Wells Fargo

Jason Dufner emerged from hibernation to take the second-round lead at the Wells Fargo Championship on Friday, while Rory McIlroy stumbled in Charlotte, North Carolina. Dufner, the 2013 PGA Championship winner whose recent form has been woeful, never looked back after pitching in from 35 yards for birdie at the first hole at Quail Hollow. Horse racing: Wide open Kentucky Derby awaits after favorite scratched

The Kentucky Derby is the first step toward Triple Crown glory and this year's "Run for the Roses" is more wide open than it has been in years after race favorite Omaha Beach was scratched due to injury. The betting line for Saturday's race went through a big shake-up after Omaha Beach, who was installed as the early 4-1 favorite, was pulled from the event on Wednesday after developing a non-life threatening breathing problem. Judge orders Kraft to appear at next court date

Robert Kraft, owner of the New England Patriots, was ordered to appear in West Palm Beach, Fla., for a hearing on the admissibility of video evidence in his prostitution and solicitation case. Kraft, 77, asked through his attorneys for Judge Leonard Hanser to block the release of video evidence related to his visits to Orchids of Asia Day Spa in Jupiter, Fla. The visits on Jan. 19 and 20 resulted in what prosecutors claim is Kraft paying for and receiving sex acts at the spa. Semenya's future in doubt after she says no to medication to lower testosterone

Double Olympic champion Caster Semenya's future was in doubt on Friday after she said she would not take medication to lower her testosterone levels to comply with new rules for the 800 metres. There was confusion about how she will be able to compete in her specialist event again, as the 28-year-old South African declared "Hell no!" when asked if she would take testosterone-lowering medication. Physicians group calls on members to reject IAAF regulations

The World Medical Association has called on its members not to implement new International Association of Athletics Federations (IAAF) regulations that restrict testosterone levels in female athletes with differences in sexual development. The Court of Arbitration for Sport (CAS) this week dismissed an appeal by Olympic 800 meters champion Caster Semenya to set aside the regulations, which will come into effect on Wednesday. MLB roundup: Syndergaard homers in 1-0 shutout

Noah Syndergaard did it all for the New York Mets on Thursday afternoon, as the right-hander tossed a four-hitter and produced the game's only run with a third-inning homer in a 1-0 win over the visiting Cincinnati Reds. Syndergaard's second career shutout -- and his second homer of the season and the sixth of his career -- gave the Mets a split of the four-game series. He walked one and struck out 10. Serena Williams to return for Italian Open

Serena Williams will be back in action just after Mother's Day at the Italian Open. The tournament director told the Associated Press on Friday that Williams "has already reserved her rooms and should be here a few days early" for the event Motor racing: Chadwick leads as all-female W Series readies for first race

British racer Jamie Chadwick looked the early favorite as the new all-female W Series held its first official practice sessions at a rainy Hockenheim on Friday. The Two-year-old, one of five Britons in the field, was the only driver to lap inside one minute 39 seconds in the first session and also led the wetter second practice with a time of one minute 56.007.